67486 + Interview Questions in Secondary School in Physics Page 30 InterviewSolution

1451.	i) What is the physical state of the substance at the points A and C? ii) What is the melting point and boiling point of the substance? iii) Which portions of the graph indicate the change of state? iv) What is the term used to describe the phase change from gas to liquid? a) Freezing b) Evaporation c) Condensation d) None of these v) The substance is not water. How can you judge from the graph?
Answer» ANSWER: U can CHOOSE nceart for SOLVING

1451.

i) What is the physical state of the substance at the points A and C? ii) What is the melting point and boiling point of the substance? iii) Which portions of the graph indicate the change of state? iv) What is the term used to describe the phase change from gas to liquid? a) Freezing b) Evaporation c) Condensation d) None of these v) The substance is not water. How can you judge from the graph?

Answer»

ANSWER:

U can CHOOSE nceart for SOLVING

Discussion

1452.	An object move initial with velocity 15m/s . a constant force act on it 5 second to increse it velocity 25m/s . find out the ace production.please tell the answer quickly.
Answer» Answer: 2 m/s^2 Explanation: u = 15m/s v = 25m/s t = 5 s v = u + at a = (25 - 15)/5 = 2 m/s^2

1452.

An object move initial with velocity 15m/s . a constant force act on it 5 second to increse it velocity 25m/s . find out the ace production.please tell the answer quickly.

Answer»

Answer:

2 m/s^2

Explanation:

u = 15m/s

v = 25m/s

t = 5 s

v = u + at

a = (25 - 15)/5 = 2 m/s^2

Discussion

1453.	How can u prove that there exists space between liquid particles?
Answer» Explanation: Take a GLASS of water, add sugar and stir. You will observe that there is no rise in the water level. This shows that particles of MATTER have spaces between them. When sugar is added to the water, the sugar the particles ADJUST themselves in the SPACE between the water particles.

1453.

How can u prove that there exists space between liquid particles?

Answer»

Explanation:

Take a GLASS of water, add sugar and stir. You will observe that there is no rise in the water level. This shows that particles of MATTER have spaces between them. When sugar is added to the water, the sugar the particles ADJUST themselves in the SPACE between the water particles.

Discussion

1454.	a particle in 1D motion is subjected to an acceleration a = -alpha . t, where alpha is a positive constant. initial velocity is u at t = 0. the velocity of particle after time t is
Answer» Given: A PARTICLE in 1D motion is SUBJECTED to an ACCELERATION $a=-\alpha t$ where $\alpha$ is a positive constant. To find: Velocity after time t ? Calculation: $\sf \: a = - \alpha t$ $\sf \implies \: \dfrac{dv}{dt} = - \alpha t$ $\sf \implies \: dv = - \alpha \: t \: dt$ $\sf \displaystyle \sf \implies \: \int dv = - \alpha \int t \: dt$ Putting limits: $\sf \displaystyle \sf \implies \: \int_{0}^{v} dv = - \alpha \int_{0}^{t} t \: dt$ $\boxed{\sf \displaystyle \sf \implies v = - \frac{ \alpha {t}^{2} }{2}}$ HOPE It Helps .

1454.

a particle in 1D motion is subjected to an acceleration a = -alpha . t, where alpha is a positive constant. initial velocity is u at t = 0. the velocity of particle after time t is

Answer»

Given:

A PARTICLE in 1D motion is SUBJECTED to an ACCELERATION $a=-\alpha t$ where $\alpha$ is a positive constant.

To find:

Velocity after time t ?

Calculation:

$\sf \: a = - \alpha t$

$\sf \implies \: \dfrac{dv}{dt} = - \alpha t$

$\sf \implies \: dv = - \alpha \: t \: dt$

$\sf \displaystyle \sf \implies \: \int dv = - \alpha \int t \: dt$

Putting limits:

$\sf \displaystyle \sf \implies \: \int_{0}^{v} dv = - \alpha \int_{0}^{t} t \: dt$

$\boxed{\sf \displaystyle \sf \implies v = - \frac{ \alpha {t}^{2} }{2}}$

HOPE It Helps .

Discussion

1455.	I) What is the physical state of the substance at the points A and C?ii) What is the melting point and boiling point of the substance? iii) Which portions of the graph indicate the change of state? iv) What is the term used to describe the phase change from gas to liquid? a) Freezing b) Evaporation c) Condensation d) None of these v) The substance is not water. How can you judge from the graph?
Answer» I hope it will be help you Phase Transition: Liquid to Gas Vaporization of a sample of liquid is a phase transition from the liquid phase to the gas phase. There are TWO TYPES of vaporization: evaporation and boiling. Evaporation occurs at temperatures below the boiling point, and occurs on the liquid’s surface. For molecules of a liquid to evaporate, they must be located near the surface, be moving in the proper direction, and have sufficient kinetic energy to overcome intermolecular forces present in the liquid phase. Boiling, by contrast, is a RAPID vaporization that occurs at or above the boiling temperature and at or below the liquid’s surface. Vapor Pressure In much the same way that tea spreads out from a tea bag once the bag is immersed in water, molecules that are confined within a phase will tend to spread themselves (and the thermal energy they carry with them) as widely as possible. This fundamental law of nature is manifested in what is called the “escaping tendency” of the molecules from the phase. The escaping tendency is of fundamental importance in understanding all chemical equilibria and transformations. It is possible to OBSERVE the tendency of molecules to escape into the gas phase from a solid or liquid by placing the substance in a closed, evacuated container connected to a MANOMETER for measuring gas pressures

1455.

I) What is the physical state of the substance at the points A and C?ii) What is the melting point and boiling point of the substance? iii) Which portions of the graph indicate the change of state? iv) What is the term used to describe the phase change from gas to liquid? a) Freezing b) Evaporation c) Condensation d) None of these v) The substance is not water. How can you judge from the graph?

Answer»

I hope it will be help you

Phase Transition: Liquid to Gas

Vaporization of a sample of liquid is a phase transition from the liquid phase to the gas phase. There are TWO TYPES of vaporization: evaporation and boiling.

Evaporation occurs at temperatures below the boiling point, and occurs on the liquid’s surface. For molecules of a liquid to evaporate, they must be located near the surface, be moving in the proper direction, and have sufficient kinetic energy to overcome intermolecular forces present in the liquid phase.

Boiling, by contrast, is a RAPID vaporization that occurs at or above the boiling temperature and at or below the liquid’s surface.

Vapor Pressure

In much the same way that tea spreads out from a tea bag once the bag is immersed in water, molecules that are confined within a phase will tend to spread themselves (and the thermal energy they carry with them) as widely as possible. This fundamental law of nature is manifested in what is called the “escaping tendency” of the molecules from the phase. The escaping tendency is of fundamental importance in understanding all chemical equilibria and transformations.

It is possible to OBSERVE the tendency of molecules to escape into the gas phase from a solid or liquid by placing the substance in a closed, evacuated container connected to a MANOMETER for measuring gas pressures

Discussion

1456.	State the unit in which temperature is commonly measured
Answer» ANSWER: anaklausmsmsnsoslanakalkspsjsns

1456.

State the unit in which temperature is commonly measured

Answer»

ANSWER:

anaklausmsmsnsoslanakalkspsjsns

Discussion

1457.	Write the SI unit of charge and current
Answer» Answer: The coulomb is the SI unit of charge. ... One coulomb is DEFINED as the AMOUNT of charge flowing when the current is 1 ampere.

1457.

Write the SI unit of charge and current

Answer»

Answer:

The coulomb is the SI unit of charge. ... One coulomb is DEFINED as the AMOUNT of charge flowing when the current is 1 ampere.

Discussion

1458.	find the distance time graph of three persons a b c moving a fixed direction find is there anyone at rest if so why
Answer» ANSWER: This is your answer Explanation: HOPE itz helps U

1458.

find the distance time graph of three persons a b c moving a fixed direction find is there anyone at rest if so why

Answer»

ANSWER:

This is your answer

Explanation:

HOPE itz helps U

Discussion

1459.	What is labourtary thermometer
Answer» Answer: LABORATORY thermometer are used to MEASURE the temperature of other OBJECTS . it's consist of a THICK - bore glass CAPILLARY tube.

1459.

What is labourtary thermometer

Answer»

Answer:

LABORATORY thermometer are used to MEASURE the temperature of other OBJECTS . it's consist of a THICK - bore glass CAPILLARY tube.

Discussion

1460.	I want 10 examples of contact force
Answer» EXPLANATION: nzbcbxnskhdbcnxksskdbfbdbbdjndbdhd

1460.

I want 10 examples of contact force

Answer»

EXPLANATION:

nzbcbxnskhdbcnxksskdbfbdbbdjndbdhd

Discussion

1461.	Clear my choice Range of the projectiles is maximum at an angle of a) 459 b) 909 C) 1800 d) none of these Select one 1 2
Answer» Answer: Damage to a part of the PITUITARY gland that helps control urination may lead to frequent urination and thirst. SEVERE bleeding. Heavy and persistent bleeding into the brain or from the nose may occur if a LARGE blood vessel is damaged during surgery. Visual PROBLEMS.

1461.

Clear my choice Range of the projectiles is maximum at an angle of a) 459 b) 909 C) 1800 d) none of these Select one 1 2

Answer»

Answer:

Damage to a part of the PITUITARY gland that helps control urination may lead to frequent urination and thirst. SEVERE bleeding. Heavy and persistent bleeding into the brain or from the nose may occur if a LARGE blood vessel is damaged during surgery. Visual PROBLEMS.

Discussion

1462.	How many base quantities are included in SI system?
Answer» ANSWER: The SI is made up of 7 base units that DEFINE the 22 derived units with special NAMES and symbols.

1462.

How many base quantities are included in SI system?

Answer»

ANSWER:

The SI is made up of 7 base units that DEFINE the 22 derived units with special NAMES and symbols.

Discussion

1463.	Draw a circuit diagram of a transistor CE amplifier and explain
Answer» EXPLANATION: I HOPE you UNDERSTAND that

1463.

Draw a circuit diagram of a transistor CE amplifier and explain

Answer»

EXPLANATION:

I HOPE you UNDERSTAND that

Discussion

1464.	How society has been benefits by the knowledge of physics?
Answer» Explanation: hlo mate here's your answer Physics is the study of our natural world. From the microscopic level of particles to the macroscopic level of space, physics has CHANGED our understanding of the universe and, in doing so, has changed our philosophy and way of life. Before the creation and understanding of physics, most people assumed that all the answers to the unknown were from a supernatural or godly source. As scientists discovered more and more about the cosmos using physics, they were able to provide verifiable and testable answers to the unknown QUESTIONS of nature. Doing so changed the philosophy of humankind, letting people with this new understanding create scientific THEORIES and inventions that benefited everyone. This new science also challenged the infallibility of their rulers, igniting a FUTURE where people thought for themselves and worked together to create the best way forward for human beings. With the introduction of physics, not only were we able to better UNDERSTAND the world around us and use that knowledge to better it and ourselves, we also learned to challenge our belief systems. i hope its help you mark as brainlist sis thanks bhi dedo jsb tak hum na bole tab tak aap nahi dengi

1464.

How society has been benefits by the knowledge of physics?

Answer»

Explanation:

hlo mate here's your answer

Physics is the study of our natural world. From the microscopic level of particles to the macroscopic level of space, physics has CHANGED our understanding of the universe and, in doing so, has changed our philosophy and way of life. Before the creation and understanding of physics, most people assumed that all the answers to the unknown were from a supernatural or godly source. As scientists discovered more and more about the cosmos using physics, they were able to provide verifiable and testable answers to the unknown QUESTIONS of nature.

Doing so changed the philosophy of humankind, letting people with this new understanding create scientific THEORIES and inventions that benefited everyone. This new science also challenged the infallibility of their rulers, igniting a FUTURE where people thought for themselves and worked together to create the best way forward for human beings. With the introduction of physics, not only were we able to better UNDERSTAND the world around us and use that knowledge to better it and ourselves, we also learned to challenge our belief systems.

i hope its help you mark as brainlist

sis thanks bhi dedo jsb tak hum na bole tab tak aap nahi dengi

Discussion

1465.	Ardhchalak kise kahte hai
Answer» ANSWER: me NAHI jaante HU ISKA answer

1465.

Ardhchalak kise kahte hai

Answer»

ANSWER:

me NAHI jaante HU ISKA answer

Discussion

1466.	A vector is the one which has a) only magnitude c) both magnitude and direction b) only direction d) none of these
Answer» ANSWER: what is the NATURE of the magnetic FIELD when CURRENT is passing through a conductor

1466.

A vector is the one which has a) only magnitude c) both magnitude and direction b) only direction d) none of these

Answer»

ANSWER:

what is the NATURE of the magnetic FIELD when CURRENT is passing through a conductor

Discussion

1467.	Why engaging in sports during this ‘New Normal"" important?
Answer» Explanation: Physical ACTIVITY and exercise can be effective treatment strategies for SYMPTOMS of both depression and anxiety. Each DAY is a new opportunity to ENGAGE in physical activity and exercise that can bring short and long-term benefits for mood, sleep, and physical HEALTH.

1467.

Why engaging in sports during this ‘New Normal"" important?

Answer»

Explanation:

Physical ACTIVITY and exercise can be effective treatment strategies for SYMPTOMS of both depression and anxiety. Each DAY is a new opportunity to ENGAGE in physical activity and exercise that can bring short and long-term benefits for mood, sleep, and physical HEALTH.

Discussion

1468.	What is the direction of motion of a projectile at the highest point of its trajectory ?
Answer» Answer: At the highest point vertical COMPONENT of VELOCITY becomes zero THUS direction of MOTION of projectile becomes horizontal. *HOPE* *YOU* *LIKE* *THIS* *ANSWER* *PLEASE* *MARK* AS *BRAINLIST*.

1468.

What is the direction of motion of a projectile at the highest point of its trajectory ?

Answer»

Answer:

At the highest point vertical COMPONENT of VELOCITY becomes zero THUS direction of MOTION of projectile becomes horizontal.

HOPE YOU LIKE THIS ANSWER

PLEASE MARK AS BRAINLIST.

Discussion

1469.	Very short answerWrite the vector relation between angular velocity w tangential velocity v and position vector
Answer» EXPLANATION: Any quantity or an UNIT that has direction are called as vector UNITS. ... The angular VELOCITY is directly proportional to the product of TANGENTIAL velocity and position vector. That is, the angular velocity is equal to the tangential velocity if and only if they are equal in magnitude and in direction.

1469.

Very short answerWrite the vector relation between angular velocity w tangential velocity v and position vector

Answer»

EXPLANATION:

Any quantity or an UNIT that has direction are called as vector UNITS. ... The angular VELOCITY is directly proportional to the product of TANGENTIAL velocity and position vector. That is, the angular velocity is equal to the tangential velocity if and only if they are equal in magnitude and in direction.

Discussion

1470.	A construction worker stands in a 2.6-m-deep hole, 3.1 m from the edge of the hole. He tosses a hammer to a companion outside the hole If the hammer leaves his hand 1.0 m above the bottom of the hole at an angle of 35, what's the minimum speed it needs to clear the edge of the hole? How far from the edge of the hole does it land?
Answer» Answer: are YAAR ithne saare bhada question KUE DHIYA YE samajme nai aatha

1470.

A construction worker stands in a 2.6-m-deep hole, 3.1 m from the edge of the hole. He tosses a hammer to a companion outside the hole If the hammer leaves his hand 1.0 m above the bottom of the hole at an angle of 35, what's the minimum speed it needs to clear the edge of the hole? How far from the edge of the hole does it land?

Answer»

Answer:

are YAAR ithne saare bhada question

KUE DHIYA

YE samajme nai aatha

Discussion

1471.	An object is placed vertically at a distance of 20 cm from a convex lens. If the height of the object is 5 cm and the focal length of the lens is 10 cm, what will be the position, size and nature of the image? How much bigger will the image be as compared to the object?
Answer» Given :- Height of the object (h¹) = 5cm, focal length (F) = 10cm, distance of the object ( u ) = -20CM Image distance (v) = ?, Height of the image ( h²) = ?, ⠀⠀⠀⠀⠀⠀⠀ Magnification (M) = ? ━━━━━━━━━━━━━━━━━━━━━━━━━━ $\sf \longrightarrow\: \dfrac{1}{v} - \dfrac{1}{u} = \dfrac{1}{f}$ $\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{u} + \dfrac{1}{f}$ $\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{ -20} + \dfrac{1}{10}$ $\sf \longrightarrow\: \dfrac{1}{v} - \dfrac{ - 1 + 2}{20}$ $\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{20}$ $\sf \longrightarrow\: v \: = 20cm$ The positive sign of the image distance shows that image is formed at 20cm on the other side of the lens. $Magnification(M) = { \bf \dfrac{h_2 }{ \ h_1 }} = \bf\dfrac{v}{u}$ $h_2 = { \bf \dfrac{v}{ \ u }} \times h_1$ $h_2 = { \bf \dfrac{20}{ - 20 }} \times 5$ $h_2 = { \bf {( - 1) \times 5}{ }}$ $h_2 = { \bf { - 5cm}{ }}$ $M = { \bf \dfrac{v}{ u }} = \dfrac{20}{ - 20} = - 1$ The negative sign of the height of image and the magnification shows the image in inverted and REAL. it is below the principal AXIS and is same SIZE as the object.

1471.

An object is placed vertically at a distance of 20 cm from a convex lens. If the height of the object is 5 cm and the focal length of the lens is 10 cm, what will be the position, size and nature of the image? How much bigger will the image be as compared to the object?

Answer»

Given :-

Height of the object (h¹) = 5cm,

focal length (F) = 10cm, distance of the object ( u ) = -20CM

Image distance (v) = ?,

Height of the image ( h²) = ?,

⠀⠀⠀⠀⠀⠀⠀ Magnification (M) = ?

━━━━━━━━━━━━━━━━━━━━━━━━━━

$\sf \longrightarrow\: \dfrac{1}{v} - \dfrac{1}{u} = \dfrac{1}{f}$

$\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{u} + \dfrac{1}{f}$

$\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{ -20} + \dfrac{1}{10}$

$\sf \longrightarrow\: \dfrac{1}{v} - \dfrac{ - 1 + 2}{20}$

$\sf \longrightarrow\: \dfrac{1}{v} = \dfrac{1}{20}$

$\sf \longrightarrow\: v \: = 20cm$

The positive sign of the image distance shows that image is formed at 20cm on the other side of the lens.

$Magnification(M) = { \bf \dfrac{h_2 }{ \ h_1 }} = \bf\dfrac{v}{u}$

$h_2 = { \bf \dfrac{v}{ \ u }} \times h_1$

$h_2 = { \bf \dfrac{20}{ - 20 }} \times 5$

$h_2 = { \bf {( - 1) \times 5}{ }}$

$h_2 = { \bf { - 5cm}{ }}$

$M = { \bf \dfrac{v}{ u }} = \dfrac{20}{ - 20} = - 1$

The negative sign of the height of image and the magnification shows the image in inverted and REAL. it is below the principal AXIS and is same SIZE as the object.

Discussion

1472.	Permangent magnets are made of
Answer» ANSWER: here the answer Explanation: SPECIAL ALLOYS (ferromagnetic materials) such as IRON, nickel and cobalt, SEVERAL alloys of rare-earth metals and minerals such as lodestone.

1472.

Permangent magnets are made of

Answer»

ANSWER:

here the answer

Explanation:

SPECIAL ALLOYS (ferromagnetic materials) such as IRON, nickel and cobalt, SEVERAL alloys of rare-earth metals and minerals such as lodestone.

Discussion

1473.	Anyone knows about MTG coaching for JEE. any review..???
Answer» ANSWER: no but I have HEAR it was KINDA GOOD

1473.

Anyone knows about MTG coaching for JEE. any review..???

Answer»

ANSWER:

no but I have HEAR it was KINDA GOOD

Discussion

1474.	In an accident, two cars can either collide and bounce off each other on collision or collide,crumple up and travel together with the same speed after the collision. Which would be more damaging? Justify your answer.
Answer» Answer: COLLISION would be a SMALL force. So‚ Collide will be more damaging as it would be HIGH Force ! IF YOU GET ANY HELP FROM MY ANSWER ☺️ YOU CAN FOLLOW ME AND LIKE MY ANSWER.

1474.

In an accident, two cars can either collide and bounce off each other on collision or collide,crumple up and travel together with the same speed after the collision. Which would be more damaging? Justify your answer.

Answer»

Answer:

COLLISION would be a SMALL force. So‚ Collide will be more damaging as it would be HIGH Force !

IF YOU GET ANY HELP FROM MY ANSWER ☺️

YOU CAN FOLLOW ME AND LIKE MY ANSWER.

Discussion

1475.	What is the function of a rectifier?
Answer» ANSWER: A rectifier is an electrical device that CONVERTS alternating CURRENT (AC), which PERIODICALLY REVERSES direction, to direct current (DC), which flows in only one direction.

1475.

What is the function of a rectifier?

Answer»

ANSWER:

A rectifier is an electrical device that CONVERTS alternating CURRENT (AC), which PERIODICALLY REVERSES direction, to direct current (DC), which flows in only one direction.

Discussion

1476.	How can you sat that motion is relative
Answer» ANSWER: hihihihihihiheheheheheheheh

1476.

How can you sat that motion is relative

Answer»

ANSWER:

hihihihihihiheheheheheheheh

Discussion

1477.	With the help of this element the magnetic force can be detected
Answer» Explanation: SIKANDAR Lodi ruled the sultanate from 17 July 1489 to 21 November 1517. Sikandar Lodi was BORN to the first sultan of the Lodi dynasty, Bahlul Lodi and Bibi Tiger, daughter of a HINDU GOLDSMITH. After he BECAME the ruler he proved that he is an ablest ruler.

1477.

With the help of this element the magnetic force can be detected

Answer»

Explanation:

SIKANDAR Lodi ruled the sultanate from 17 July 1489 to 21 November 1517. Sikandar Lodi was BORN to the first sultan of the Lodi dynasty, Bahlul Lodi and Bibi Tiger, daughter of a HINDU GOLDSMITH. After he BECAME the ruler he proved that he is an ablest ruler.

Discussion

1478.	Why are the weights in a weight box kept in 5221 ratio
Answer» Answer: The WEIGHTS of tin and ZINC in an ALLOY are in the ratio `2 : 5`. FIND the weight of the alloy if the weight of the zinc is `22.5 g.` Explanation: please mark qs brainlist

1478.

Why are the weights in a weight box kept in 5221 ratio

Answer»

Answer:

The WEIGHTS of tin and ZINC in an ALLOY are in the ratio `2 : 5`. FIND the weight of the alloy if the weight of the zinc is `22.5 g.`

Explanation:

please mark qs brainlist

Discussion

1479.	A uniform metre scale is in equilibrium as shown in diagram 1 calculate the weight of the metre scale2 which of the following option is correct to keep the ruler in equilibrium when 40gf weight is shifted to 0cm mark
Answer» SIR 7 u UU u u u u iiu 8 iei 4ic8cm8cmc8ck I risk 4ikm4mrj 3 R r r r FINE mm8 j 8i j j

Discussion

1480.	Gravitational constant is ------------- a) zero at equator b) maximum at equator c) depends upon the height of the object d) same in the entire Universe
Answer» ANSWER: MAXIMUM at EQUATOR will be the answer

1480.

Gravitational constant is ------------- a) zero at equator b) maximum at equator c) depends upon the height of the object d) same in the entire Universe

Answer»

ANSWER:

MAXIMUM at EQUATOR will be the answer

Discussion

1481.	Derive expression for the radius of the nth bohr orbit in an atom.hence show that the radius of the orbit is directly proportional to the square of the principal quantum number
Answer»

Discussion

1482.	The current in the following circuit is
Answer» Explanation From the given FIGURE, the resistance in the arms AC and BC are given in series R' = Rᴀᴄ = + Rʙᴄ R' = 3Ω + 3Ω = 6Ω Now, R' is in parallel with the resistance in ARM AB, So, R = R' × Rᴀʙ/ R' + R'ᴀʙ = 6Ω × 3Ω/6Ω + 3Ω = 2Ω Therefore, the OHMS law can be stated as V = i R or current, i = V/R Substituting the values, we get i = 2/2 = 1A ( ∵ V = 2V) ∴ The current in the following circuit is 1 A !

1482.

The current in the following circuit is

Answer»

Explanation

From the given FIGURE, the resistance in the arms AC and BC are given in series

R' = Rᴀᴄ = + Rʙᴄ

R' = 3Ω + 3Ω = 6Ω

Now, R' is in parallel with the resistance in ARM AB, So,

R = R' × Rᴀʙ/ R' + R'ᴀʙ = 6Ω × 3Ω/6Ω + 3Ω = 2Ω

Therefore, the OHMS law can be stated as

V = i R or current, i = V/R

Substituting the values, we get

i = 2/2 = 1A ( ∵ V = 2V)

∴ The current in the following circuit is 1 A !

Discussion

1483.	Which of the following instruments works by electromagnetic induction? O Dynamo O Moving coil galvanometer O Telephone receiver O Simple motor
Answer» Explanation: An ELECTRIC generator (are called dynamo) is a machine which GENERATES electricity by USING the PRINCIPLE of electromagnetic induction.

1483.

Which of the following instruments works by electromagnetic induction? O Dynamo O Moving coil galvanometer O Telephone receiver O Simple motor

Answer»

Explanation:

An ELECTRIC generator (are called dynamo) is a machine which GENERATES electricity by USING the PRINCIPLE of electromagnetic induction.

Discussion

1484.	A car takes 10 hr to cover a displacement of 500km. What is the velocity of car in ms?
Answer» Explanation: Given : TIME TAKEN = 10 hours Displacement = 500KM Sol. 10 hours = 10 × 60 = 600 minutes 600 minutes = 600 × 60 = 36000 seconds 500km = 500× 1000 = 500000 metres Formula:- $velocity = \frac{displacement}{time}$ velocity = 500000 / ( 36000) Therefore, velocity = 2.777777778 metres/second.

1484.

A car takes 10 hr to cover a displacement of 500km. What is the velocity of car in ms?

Answer»

Explanation:

Given :

TIME TAKEN = 10 hours

Displacement = 500KM

Sol.

10 hours = 10 × 60 = 600 minutes

600 minutes = 600 × 60 = 36000 seconds

500km = 500× 1000 = 500000 metres

Formula:-

$velocity = \frac{displacement}{time}$

velocity = 500000 / ( 36000)

Therefore, velocity = 2.777777778 metres/second.

Discussion

1485.	"Beats" in sound refer to:a) combination of two waves of slightly different frequencyb) reversal of phase of reflected wave relative to incident wavec) two media having slightly different sound velocitiesd) effect of relative motion of source and observer
Answer» ANSWER:a) combination of two waves of slightly DIFFERENT frequency

1485.

"Beats" in sound refer to:a) combination of two waves of slightly different frequencyb) reversal of phase of reflected wave relative to incident wavec) two media having slightly different sound velocitiesd) effect of relative motion of source and observer

Answer»

ANSWER:a) combination of two waves of slightly DIFFERENT frequency

Discussion

1486.	A car can traved so kin at uniformspeed of 30 kmth find averageSpeed.
Answer» Answer: At first, we will FIND the time taken by the car to cover the distance. Then using the time we will find the average speed. COMPLETE step-by-step answer: It is GIVEN that a car TRAVELS \[30\]km at the uniform speed of \[40\] km/hr and NEXT \[30\] km at the speed of \[20\] km/hr.

1486.

A car can traved so kin at uniformspeed of 30 kmth find averageSpeed.

Answer»

Answer:

At first, we will FIND the time taken by the car to cover the distance. Then using the time we will find the average speed. COMPLETE step-by-step answer: It is GIVEN that a car TRAVELS \[30\]km at the uniform speed of \[40\] km/hr and NEXT \[30\] km at the speed of \[20\] km/hr.

Discussion

1487.	A car is spotted at 30m from the convex mirror atfocal length of hom. Find at what distance imageis formed also find magnification give nature andsize of image
Answer» ANSWER: Top answer · 55 votes The FOCAL length of the convex mirror is f = 30 cm and the magnification of the image is m = 1/4 We have to calculate the OBJECT distance u .According ..

1487.

A car is spotted at 30m from the convex mirror atfocal length of hom. Find at what distance imageis formed also find magnification give nature andsize of image

Answer»

ANSWER:

1488.	Who is a father's of physics
Answer» ANSWER: GALILEO GALILEI IS THE FATHER OF PHYSICS Explanation:

Who is a father's of physics

Answer»

ANSWER:

GALILEO GALILEI IS THE FATHER OF PHYSICS

Explanation:

Discussion

1489.	Frame shift mutation occurs when?
Answer» Answer: FOLLOWME then I TELL U OK bro

1489.

Frame shift mutation occurs when?

Answer»

Answer:

FOLLOWME then I TELL U OK bro

Discussion

1490.	If we kill charge in this world .what will happen
Answer» Answer: what is the NATURE of the MAGNETIC FIELD when CURRENT is passing through a conductor

1490.

If we kill charge in this world .what will happen

Answer»

Answer:

what is the NATURE of the MAGNETIC FIELD when CURRENT is passing through a conductor

Discussion

1491.	Mention three consequences of the Pauli's exclusion principle
Answer» Explanation: The PAULI exclusion PRINCIPLE EXPLAINS a wide variety of physical phenomena. One particularly important consequence of the principle is the elaborate electron-shell structure of atoms and the WAY atoms share electrons. It explains the variety of chemical elements and their chemical COMBINATIONS.

1491.

Mention three consequences of the Pauli's exclusion principle

Answer»

Explanation:

The PAULI exclusion PRINCIPLE EXPLAINS a wide variety of physical phenomena. One particularly important consequence of the principle is the elaborate electron-shell structure of atoms and the WAY atoms share electrons. It explains the variety of chemical elements and their chemical COMBINATIONS.

Discussion

1492.	Determined the density of a cub
Answer» Answer: VERIFY the lengths of the SIDES (L) MEASURE the mass of the cube (M). The density is given by M/L^3 The preferred units of measure are M in kg and L in meters. Explanation: MARK it as BRAINLIST

1492.

Determined the density of a cub

Answer»

Answer:

VERIFY the lengths of the SIDES (L)

MEASURE the mass of the cube (M).

The density is given by M/L^3

The preferred units of measure are M in kg and L in meters.

Explanation:

MARK it as BRAINLIST

Discussion

1493.	Find the force required to produce an acceleration of 2 m/s on a body of mass 10kg. What would be its acceleration if the force is doubled?
Answer» EXPLANATION: ANSWER is in the above PICTURE

1493.

Find the force required to produce an acceleration of 2 m/s on a body of mass 10kg. What would be its acceleration if the force is doubled?

Answer»

EXPLANATION:

ANSWER is in the above PICTURE

Discussion

1494.	Define the terms - Motion, uniform motion, non uniform motion
Answer» $\large\sf \underline{Motion :- }$ $\orange\implies$ Movement of any object from one position to another position with respect to the observer is CALLED as Motion $\\$ $\underline{\underline{\maltese\:\: \textbf{\textsf{Uniform Motion}}}}$ $\purple\implies$ If an object is travelling with uniform motion, it is moving in a straight line at a constant speed. For example:- when a car travels at a constant speed, the driving force from the engine is balanced by the resistive forces such as AIR resistance and frictional forces in the car's moving parts. $\\$ $\underline{\underline{\maltese\:\: \textbf{\textsf{ Non-Uniform Motion}}}}$ $\pink\implies$ A body is said to be in a non-uniform motion if it travels unequal DISTANCES in equal intervals of TIME. $\pink\implies$ Non - Uniform motion is also known as ACCELERATED motion. For Example :- Oscillation of pendulum, the motion of a train, a person jogging in the park etc. $\rule{300px}{.7ex}$ $\large\tt\red{\underline{@ItzNia ~}}$

1494.

Define the terms - Motion, uniform motion, non uniform motion

Answer»

$\large\sf \underline{Motion :- }$

$\orange\implies$ Movement of any object from one position to another position with respect to the observer is CALLED as Motion

$\\$

$\underline{\underline{\maltese\:\: \textbf{\textsf{Uniform Motion}}}}$

$\purple\implies$ If an object is travelling with uniform motion, it is moving in a straight line at a constant speed.

For example:- when a car travels at a constant speed, the driving force from the engine is balanced by the resistive forces such as AIR resistance and frictional forces in the car's moving parts.

$\\$

$\underline{\underline{\maltese\:\: \textbf{\textsf{ Non-Uniform Motion}}}}$

$\pink\implies$ A body is said to be in a non-uniform motion if it travels unequal DISTANCES in equal intervals of TIME.

$\pink\implies$ Non - Uniform motion is also known as ACCELERATED motion.

For Example :- Oscillation of pendulum, the motion of a train, a person jogging in the park etc.

$\rule{300px}{.7ex}$

$\large\tt\red{\underline{@ItzNia ~}}$

Discussion

1495.	4. A man wishes to throw two darts one by one at the target at B with same speed so that they arrive at the same time. Mark the correct statements about the two projections. Trajectory B Trajectory A А. B (A) Projectile that travels along trajectory A was projected earlier (B) Projectile that travels along trajectory B was projected earlier. (C) Second dart must be projected at angle e, such that 0 + 0,8 = 90° (D) Second dart must be projected at angle , >, STA
Answer» The initial speed of the two darts are same. $\small\text{$u_A=u_B=u$}$ The darts are PROJECTED from same point A but not at same time; they are thrown one by one. But they travel same horizontal distance and reach B at the same time. Since the horizontal RANGE of both darts are same, $\small\text{$\longrightarrow\dfrac{u^2\sin(2\theta_A)}{g}=\dfrac{u^2\sin(2\theta_B)}{g}$}$ $\small\text{$\longrightarrow\sin(2\theta_A)=\sin(2\theta_B)$}$ Since $\small\text{$\theta_A\neq\theta_B,$}$ $\small\text{$\Longrightarrow2\theta_A+2\theta_B=180^o$}$ $\small\text{$\longrightarrow\underline{\underline{\theta_A+\theta_B=90^o}}$}$ In the figure we see, $\small\text{$\longrightarrow\theta_B>\theta_A$}$ Since both are acute angles, $\small\text{$\longrightarrow\sin(\theta_B)>\sin(\theta_A)$}$ Multiplying both sides by $\small\text{$\dfrac{2u}{g}$}$ which is positive, $\small\text{$\longrightarrow\dfrac{2u\sin(\theta_B)}{g}>\dfrac{2u\sin(\theta_A)}{g}$}$ That is, $\small\text{$\longrightarrow T_B>T_A$}$ It MEANS projectile that travels through trajectory B should travel more time than the projectile that travels through trajectory A, so it should be projected earlier in order to arrive at B at the same time. Hence options (B) and (C) are CORRECT.

1495.

4. A man wishes to throw two darts one by one at the target at B with same speed so that they arrive at the same time. Mark the correct statements about the two projections. Trajectory B Trajectory A А. B (A) Projectile that travels along trajectory A was projected earlier (B) Projectile that travels along trajectory B was projected earlier. (C) Second dart must be projected at angle e, such that 0 + 0,8 = 90° (D) Second dart must be projected at angle , >, STA

Answer»

The initial speed of the two darts are same.

$\small\text{$u_A=u_B=u$}$

The darts are PROJECTED from same point A but not at same time; they are thrown one by one. But they travel same horizontal distance and reach B at the same time.

Since the horizontal RANGE of both darts are same,

$\small\text{$\longrightarrow\dfrac{u^2\sin(2\theta_A)}{g}=\dfrac{u^2\sin(2\theta_B)}{g}$}$

$\small\text{$\longrightarrow\sin(2\theta_A)=\sin(2\theta_B)$}$

Since $\small\text{$\theta_A\neq\theta_B,$}$

$\small\text{$\Longrightarrow2\theta_A+2\theta_B=180^o$}$

$\small\text{$\longrightarrow\underline{\underline{\theta_A+\theta_B=90^o}}$}$

In the figure we see,

$\small\text{$\longrightarrow\theta_B>\theta_A$}$

Since both are acute angles,

$\small\text{$\longrightarrow\sin(\theta_B)>\sin(\theta_A)$}$

Multiplying both sides by $\small\text{$\dfrac{2u}{g}$}$ which is positive,

$\small\text{$\longrightarrow\dfrac{2u\sin(\theta_B)}{g}>\dfrac{2u\sin(\theta_A)}{g}$}$

That is,

$\small\text{$\longrightarrow T_B>T_A$}$

It MEANS projectile that travels through trajectory B should travel more time than the projectile that travels through trajectory A, so it should be projected earlier in order to arrive at B at the same time.

Hence options (B) and (C) are CORRECT.

Discussion

1496.	समाजव्यवस्थेतील नियम व कायदे यांचे महत्त्व स्पष्ट करा.
Answer» Explanation: Sikandar Lodi ruled the sultanate from 17 JULY 1489 to 21 NOVEMBER 1517. Sikandar Lodi was born to the first sultan of the Lodi dynasty, BAHLUL Lodi and Bibi Tiger, daughter of a Hindu goldsmith. After he became the ruler he proved that he is an ablest ruler.

1496.

समाजव्यवस्थेतील नियम व कायदे यांचे महत्त्व स्पष्ट करा.

Answer»

Explanation:

Sikandar Lodi ruled the sultanate from 17 JULY 1489 to 21 NOVEMBER 1517. Sikandar Lodi was born to the first sultan of the Lodi dynasty, BAHLUL Lodi and Bibi Tiger, daughter of a Hindu goldsmith. After he became the ruler he proved that he is an ablest ruler.

Discussion

1497.	टॉप टेन थ्री यूएस कैपेसिटी फॉर 3 कैपेसिटी ऑफ़ पी यू एस ईच डे विल बे अरेंज्ड
Answer»

Discussion

1498.	Bark cells are impervious to gases and water”. What experiment will you performto prove this?
Answer» Bark cells are impervious to water and gases DUE to the presence of a MATERIAL known as Suberin. An experiment that can DEMONSTRATE this is by taking two cinnamon barks, place them into DIFFERENT containers, one having water and the other having nothing but just air. please mark me brain mark list

1498.

Bark cells are impervious to gases and water”. What experiment will you performto prove this?

Answer»

Bark cells are impervious to water and gases DUE to the presence of a MATERIAL known as Suberin. An experiment that can DEMONSTRATE this is by taking two cinnamon barks, place them into DIFFERENT containers, one having water and the other having nothing but just air.

please mark me brain mark list

Discussion

1499.	What would happen if you remove one of the two bulbs that are connected in paraller?
Answer» Answer: Circuit Example If the light BULBS are connected in PARALLEL, the current flowing through the light bulbs combine to form the current flowing in the BATTERY, while the voltage drop is 6.0 V across each bulb and they all glow. ... One bulb burning out in a series circuit breaks the circuit.

1499.

What would happen if you remove one of the two bulbs that are connected in paraller?

Answer»

Answer:

Circuit Example

If the light BULBS are connected in PARALLEL, the current flowing through the light bulbs combine to form the current flowing in the BATTERY, while the voltage drop is 6.0 V across each bulb and they all glow. ... One bulb burning out in a series circuit breaks the circuit.

Discussion

1500.	একটি 100g ভরের বস্তু 500m উচ্চতা থেকে বাধাহীনভাবে পড়তে শুরু করার 3s পরে তার গতিশক্তি কত হবে নির্ণয় করো ?
Answer» <U>প্রদত্ত, বস্তুর ভর = 100 গ্রাম পতনের উচ্চতা = 500m সময় = 3 সেকেন্ড নির্ণেয়, বস্তুটির গতিশক্তির পরিমাণ। সমাধান, আমরা নিম্নলিখিত গাণিতিক উপায়ে এই গাণিতিক সমস্যার সহজ সমাধান করতে পারি। বস্তুর গতিশক্তি নির্ণয় করার জন্য দুইটি জিনিসের মান আমাদের প্রয়োজন - ১) বস্তুর ভর (m) = 100 গ্রাম = 0.1 কিগ্রা (প্রদত্ত) ২) বস্তুর অন্তিম গতিবেগ (V) = অজ্ঞাত অতএব, আমাদের বস্তুটির অন্তিম গতিবেগ নির্ণয় করতে হবে প্রথমে। আবার আমরা জানি যে, v = u + gt v = 0 + (9.8 x 3) [প্রাথমিক বেগ শূন্য, অভিকর্ষজ ত্বরণ =9.8 m/s²] v = 29.4 m/s সুতরাং, বস্তুটির গতিশক্তি = ½ × m × v² = ½ × 0.1 × (29.4)² = 43.218 জুল অতএব, বস্তুটির মধ্যেকার গতিশক্তির পরিমাণ হল 43.218 জুল।

1500.

একটি 100g ভরের বস্তু 500m উচ্চতা থেকে বাধাহীনভাবে পড়তে শুরু করার 3s পরে তার গতিশক্তি কত হবে নির্ণয় করো ?

Answer»

<U>প্রদত্ত,

বস্তুর ভর = 100 গ্রাম

পতনের উচ্চতা = 500m

সময় = 3 সেকেন্ড

নির্ণেয়,

বস্তুটির গতিশক্তির পরিমাণ।

সমাধান,

আমরা নিম্নলিখিত গাণিতিক উপায়ে এই গাণিতিক সমস্যার সহজ সমাধান করতে পারি।

বস্তুর গতিশক্তি নির্ণয় করার জন্য দুইটি জিনিসের মান আমাদের প্রয়োজন -

১) বস্তুর ভর (m) = 100 গ্রাম = 0.1 কিগ্রা (প্রদত্ত)

২) বস্তুর অন্তিম গতিবেগ (V) = অজ্ঞাত

অতএব, আমাদের বস্তুটির অন্তিম গতিবেগ নির্ণয় করতে হবে প্রথমে।

আবার আমরা জানি যে,

v = u + gt

v = 0 + (9.8 x 3) [প্রাথমিক বেগ শূন্য, অভিকর্ষজ ত্বরণ =9.8 m/s²]

v = 29.4 m/s

সুতরাং,

বস্তুটির গতিশক্তি = ½ × m × v² = ½ × 0.1 × (29.4)² = 43.218 জুল

অতএব, বস্তুটির মধ্যেকার গতিশক্তির পরিমাণ হল 43.218 জুল।

Discussion

Explore topic-wise InterviewSolutions in .

An object move initial with velocity 15m/s . a constant force act on it 5 second to increse it velocity 25m/s . find out the ace production.please tell the answer quickly.​

How can u prove that there exists space between liquid particles?​

a particle in 1D motion is subjected to an acceleration a = -alpha . t, where alpha is a positive constant. initial velocity is u at t = 0. the velocity of particle after time t is​

Given:

To find:

Calculation:

State the unit in which temperature is commonly measured ​

Write the SI unit of charge and current​

find the distance time graph of three persons a b c moving a fixed direction find is there anyone at rest if so why​

This is your answer

HOPE itz helps U

What is labourtary thermometer

I want 10 examples of contact force

Clear my choice Range of the projectiles is maximum at an angle of a) 459 b) 909 C) 1800 d) none of these Select one 1 2​

How many base quantities are included in SI system?​

Draw a circuit diagram of a transistor CE amplifier and explain​

How society has been benefits by the knowledge of physics? ​

Ardhchalak kise kahte hai

A vector is the one which has a) only magnitude c) both magnitude and direction b) only direction d) none of these ​

Why engaging in sports during this ‘New Normal"" important?

What is the direction of motion of a projectile at the highest point of its trajectory ?

HOPE YOU LIKE THIS ANSWER

PLEASE MARK AS BRAINLIST.

Very short answerWrite the vector relation between angular velocity w tangential velocity v and position vector

An object is placed vertically at a distance of 20 cm from a convex lens. If the height of the object is 5 cm and the focal length of the lens is 10 cm, what will be the position, size and nature of the image? How much bigger will the image be as compared to the object?​​

Given :-

━━━━━━━━━━━━━━━━━━━━━━━━━━

Permangent magnets are made of​

Anyone knows about MTG coaching for JEE. any review..???​

In an accident, two cars can either collide and bounce off each other on collision or collide,crumple up and travel together with the same speed after the collision. Which would be more damaging? Justify your answer.​

What is the function of a rectifier?

How can you sat that motion is relative​

With the help of this element the magnetic force can be detected ​

Why are the weights in a weight box kept in 5221 ratio

A uniform metre scale is in equilibrium as shown in diagram 1 calculate the weight of the metre scale2 which of the following option is correct to keep the ruler in equilibrium when 40gf weight is shifted to 0cm mark

Gravitational constant is ------------- a) zero at equator b) maximum at equator c) depends upon the height of the object d) same in the entire Universe​

Derive expression for the radius of the nth bohr orbit in an atom.hence show that the radius of the orbit is directly proportional to the square of the principal quantum number​

The current in the following circuit is​

Explanation

∴ The current in the following circuit is 1 A !

Which of the following instruments works by electromagnetic induction? O Dynamo O Moving coil galvanometer O Telephone receiver O Simple motor​

A car takes 10 hr to cover a displacement of 500km. What is the velocity of car in ms?​

"Beats" in sound refer to:a) combination of two waves of slightly different frequencyb) reversal of phase of reflected wave relative to incident wavec) two media having slightly different sound velocitiesd) effect of relative motion of source and observer

A car can traved so kin at uniformspeed of 30 kmth find averageSpeed.​

A car is spotted at 30m from the convex mirror atfocal length of hom. Find at what distance imageis formed also find magnification give nature andsize of image ​

Who is a father's of physics​

Frame shift mutation occurs when?

If we kill charge in this world .what will happen

Mention three consequences of the Pauli's exclusion principle

Determined the density of a cub

Find the force required to produce an acceleration of 2 m/s on a body of mass 10kg. What would be its acceleration if the force is doubled?

Define the terms - Motion, uniform motion, non uniform motion​

समाजव्यवस्थेतील नियम व कायदे यांचे महत्त्व स्पष्ट करा.​

टॉप टेन थ्री यूएस कैपेसिटी फॉर 3 कैपेसिटी ऑफ़ पी यू एस ईच डे विल बे अरेंज्ड ​

Bark cells are impervious to gases and water”. What experiment will you performto prove this?

What would happen if you remove one of the two bulbs that are connected in paraller?​

একটি 100g ভরের বস্তু 500m উচ্চতা থেকে বাধাহীনভাবে পড়তে শুরু করার 3s পরে তার গতিশক্তি কত হবে নির্ণয় করো ? ​

An object move initial with velocity 15m/s . a constant force act on it 5 second to increse it velocity 25m/s . find out the ace production.please tell the answer quickly.

How can u prove that there exists space between liquid particles?

a particle in 1D motion is subjected to an acceleration a = -alpha . t, where alpha is a positive constant. initial velocity is u at t = 0. the velocity of particle after time t is

State the unit in which temperature is commonly measured

Write the SI unit of charge and current

find the distance time graph of three persons a b c moving a fixed direction find is there anyone at rest if so why

Clear my choice Range of the projectiles is maximum at an angle of a) 459 b) 909 C) 1800 d) none of these Select one 1 2

How many base quantities are included in SI system?

Draw a circuit diagram of a transistor CE amplifier and explain

How society has been benefits by the knowledge of physics?

A vector is the one which has a) only magnitude c) both magnitude and direction b) only direction d) none of these

An object is placed vertically at a distance of 20 cm from a convex lens. If the height of the object is 5 cm and the focal length of the lens is 10 cm, what will be the position, size and nature of the image? How much bigger will the image be as compared to the object?

Permangent magnets are made of

Anyone knows about MTG coaching for JEE. any review..???

In an accident, two cars can either collide and bounce off each other on collision or collide,crumple up and travel together with the same speed after the collision. Which would be more damaging? Justify your answer.

How can you sat that motion is relative

With the help of this element the magnetic force can be detected

Gravitational constant is ------------- a) zero at equator b) maximum at equator c) depends upon the height of the object d) same in the entire Universe

Derive expression for the radius of the nth bohr orbit in an atom.hence show that the radius of the orbit is directly proportional to the square of the principal quantum number

The current in the following circuit is

Which of the following instruments works by electromagnetic induction? O Dynamo O Moving coil galvanometer O Telephone receiver O Simple motor

A car takes 10 hr to cover a displacement of 500km. What is the velocity of car in ms?

A car can traved so kin at uniformspeed of 30 kmth find averageSpeed.

A car is spotted at 30m from the convex mirror atfocal length of hom. Find at what distance imageis formed also find magnification give nature andsize of image

Who is a father's of physics

Define the terms - Motion, uniform motion, non uniform motion

समाजव्यवस्थेतील नियम व कायदे यांचे महत्त्व स्पष्ट करा.

टॉप टेन थ्री यूएस कैपेसिटी फॉर 3 कैपेसिटी ऑफ़ पी यू एस ईच डे विल बे अरेंज्ड

What would happen if you remove one of the two bulbs that are connected in paraller?

একটি 100g ভরের বস্তু 500m উচ্চতা থেকে বাধাহীনভাবে পড়তে শুরু করার 3s পরে তার গতিশক্তি কত হবে নির্ণয় করো ?