9478 + Interview Questions in Physics Page 54 InterviewSolution

2651.	Our milky way galaxy consists of millions of stars that make it more shiny in the black sky. Which powerful source of energy has turned The Identity of Milky Way into a huge Galaxy consisting of all the all the celestial bodies on a proper place with proper atmosphere.
Answer» Our milky way galaxy consists of millions of stars that make it more shiny in the black sky. Which powerful source of energy has turned The Identity of Milky Way into a huge Galaxy consisting of all the all the celestial bodies on a proper place with proper atmosphere.

Discussion

2652.	It requires 40ml of 1M HxA to react completely with 20ml of 1M Ca(OH)2. What is the value of X?
Answer» It requires 40ml of 1M HxA to react completely with 20ml of 1M Ca(OH)2. What is the value of X?

Discussion

2653.	Question 25Explain with a diagram how you can locate pole star with the help of the constellation Great Bear (Ursa Major).
Answer» Question 25 Explain with a diagram how you can locate pole star with the help of the constellation Great Bear (Ursa Major).

Discussion

2654.	If s-p mixing is not operative then bond order andmagnetic nature of B2 is(1) 1, paramagnetic(2) 1, diamagnetic(3) 0, diamagnetic(4) 2, paramagnetic
Answer» If s-p mixing is not operative then bond order andmagnetic nature of B2 is(1) 1, paramagnetic(2) 1, diamagnetic(3) 0, diamagnetic(4) 2, paramagnetic

Discussion

2655.	An arc lamp operates at 80v 10a. Suggest a method to use it with 240v DC source. Calculate the value of the electric component required for this purpose
Answer» An arc lamp operates at 80v 10a. Suggest a method to use it with 240v DC source. Calculate the value of the electric component required for this purpose

Discussion

2656.	Speed = Distance × _______
Answer» $S p e e d = D i s t a n c e \times_______$

Discussion

2657.	Question 24 Figure shows the word REST written in two ways in front of a mirror. Show how the word would appear in the mirror.
Answer» Question 24 Figure shows the word REST written in two ways in front of a mirror. Show how the word would appear in the mirror.

2657.

Question 24 Figure shows the word REST written in two ways in front of a mirror. Show how the word would appear in the mirror.

Answer»

Question 24

Figure shows the word REST written in two ways in front of a mirror. Show how the word would appear in the mirror.

Discussion

2658.	Two blocks A and B of mass mA= 10 kg and mB = 20 kg are place on rough horizontal surface. The blocks are connected with a string. If the coefficient of friction between the block A and ground is μA = 0.9 and between block B and ground is μB = 0.3. Find the tension in the string in situation as shown in the figure below? Forces 120 N and 100 N start acting when the system is at rest.
Answer» Two blocks A and B of mass $m_{A}$ = 10 kg and $m_{B}$ = 20 kg are place on rough horizontal surface. The blocks are connected with a string. If the coefficient of friction between the block A and ground is $μ_{A}$ = 0.9 and between block B and ground is $μ_{B}$ = 0.3. Find the tension in the string in situation as shown in the figure below? Forces 120 N and 100 N start acting when the system is at rest.

2658.

Two blocks A and B of mass mA= 10 kg and mB = 20 kg are place on rough horizontal surface. The blocks are connected with a string. If the coefficient of friction between the block A and ground is μA = 0.9 and between block B and ground is μB = 0.3. Find the tension in the string in situation as shown in the figure below? Forces 120 N and 100 N start acting when the system is at rest.

Answer»

Two blocks A and B of mass $m_{A}$ = 10 kg and $m_{B}$ = 20 kg are place on rough horizontal surface. The blocks are connected with a string. If the coefficient of friction between the block A and ground is $μ_{A}$ = 0.9 and between block B and ground is $μ_{B}$ = 0.3. Find the tension in the string in situation as shown in the figure below? Forces 120 N and 100 N start acting when the system is at rest.

Discussion

2659.	Question 5 (c)Give reason.Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.
Answer» Question 5 (c) Give reason. Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

Discussion

2660.	The turbine at the Niagara falls is 50 m deep. The average horse power developed is 500. If the efficiency of the generator is 85%, how much water passes through the turbine per minute?
Answer» The turbine at the Niagara falls is 50 m deep. The average horse power developed is 500. If the efficiency of the generator is $85 %$ , how much water passes through the turbine per minute?

Discussion

2661.	A mass of 4 kg explodes in 2 parts:- 1 kg and 3 kg. If the 1 kg mass has a velicity 30 m/s, then calculate work done by internal force?
Answer» A mass of 4 kg explodes in 2 parts:- 1 kg and 3 kg. If the 1 kg mass has a velicity 30 m/s, then calculate work done by internal force?

Discussion

2662.	Capacitor works through the process of
Answer» Capacitor works through the process of

Discussion

2663.	a block of mass m placed on a rough inclined plane and the block is at rest on the inclined plane . find tge force exerted by tge inclined plane on tge block
Answer» a block of mass m placed on a rough inclined plane and the block is at rest on the inclined plane . find tge force exerted by tge inclined plane on tge block

Discussion

2664.	A small block slides without friction down an inclined plane starting from rest. Let S_n be the dis†an ce travelled from t=n-1 to t=n. Then, S_n/S_{n+1} is (1) 2n-1/2n (2) 2n+1/2n-1 (3) 2n-1/2n+1 (4) 2n/2n+1
Answer» A small block slides without friction down an inclined plane starting from rest. Let S_n be the dis†an ce travelled from t=n-1 to t=n. Then, S_n/S_{n+1} is (1) 2n-1/2n (2) 2n+1/2n-1 (3) 2n-1/2n+1 (4) 2n/2n+1

Discussion

2665.	What is the enthalpy of formation of ions in general ? Like enthalpy of formation of proton and hydroxyl ion ?
Answer» What is the enthalpy of formation of ions in general ? Like enthalpy of formation of proton and hydroxyl ion ?

Discussion

2666.	Question 19Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether temperature of the steam was higher than that of the water boiling in the kettle. Comment.
Answer» Question 19 Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether temperature of the steam was higher than that of the water boiling in the kettle. Comment.

Discussion

2667.	No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be(a) only plane.(b) only concave.(c) only convex.(d) either plane or convex.
Answer» No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be (a) only plane. (b) only concave. (c) only convex. (d) either plane or convex.

2667.

No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be(a) only plane.(b) only concave.(c) only convex.(d) either plane or convex.

Answer»

No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be

(a) only plane.

(b) only concave.

(c) only convex.

(d) either plane or convex.

Discussion

2668.	How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? Explain the concept in Kaleidoscope. [3 MARKS]
Answer» How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? Explain the concept in Kaleidoscope. [3 MARKS]

Discussion

2669.	State two precautions to be observed while measuring length with the help of a metre scale.
Answer» State two precautions to be observed while measuring length with the help of a metre scale.

Discussion

2670.	Kinetic energy of the particle depends on the square of speed of the particle. If error in the measurement of speed is 40% then error in the measurement of the kinetic energy will be
Answer» Kinetic energy of the particle depends on the square of speed of the particle. If error in the measurement of speed is 40% then error in the measurement of the kinetic energy will be

Discussion

2671.	Splitting of light into its component colours is known as:
Answer» Splitting of light into its component colours is known as:

Discussion

2672.	Which side of the Moon can never be seen from the Earth?
Answer» Which side of the Moon can never be seen from the Earth?

Discussion

2673.	The maximum tension in the string of a simple pendulum is 1.2 times the minimum tension. Find the angular amplitude (thita) of that pendulum.
Answer» The maximum tension in the string of a simple pendulum is 1.2 times the minimum tension. Find the angular amplitude (thita) of that pendulum.

Discussion

2674.	it is easier to turn steering wheel of a large diameter then a small diameter .give reason
Answer» it is easier to turn steering wheel of a large diameter then a small diameter .give reason

Discussion

2675.	In a premise, 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h per day. Find: (a) total power consumed per day, (b) total power consumed in 30 days. (c) total electric energy consumed in 30 days. (d) the cost of electricity at the rate of Rs 6.25 per unit.
Answer» In a premise, 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h per day. Find: (a) total power consumed per day, (b) total power consumed in 30 days. (c) total electric energy consumed in 30 days. (d) the cost of electricity at the rate of Rs 6.25 per unit.

2675.

In a premise, 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h per day. Find: (a) total power consumed per day, (b) total power consumed in 30 days. (c) total electric energy consumed in 30 days. (d) the cost of electricity at the rate of Rs 6.25 per unit.

Answer»

In a premise, 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h per day. Find:

(a) total power consumed per day,

(b) total power consumed in 30 days.

(c) total electric energy consumed in 30 days.

(d) the cost of electricity at the rate of Rs 6.25 per unit.

Discussion

2676.	Least amount of friction is required in which of the following sports?
Answer» Least amount of friction is required in which of the following sports?

Discussion

2677.	76 A constant force acting on a body of mass 3Kg changes its speed from 2m/s to 3.5m/s in 25 s. In the direction of the motion of the body. What is the magnitude and direction of the force?
Answer» 76 A constant force acting on a body of mass 3Kg changes its speed from 2m/s to 3.5m/s in 25 s. In the direction of the motion of the body. What is the magnitude and direction of the force?

Discussion

2678.	Two slits are seperated by 0.3mm. A beam of 500nm light strikes the slits producing an interference pattern. The number of maxima observed in the angular range -30^°
Answer» Two slits are seperated by 0.3mm. A beam of 500nm light strikes the slits producing an interference pattern. The number of maxima observed in the angular range -30^°

Discussion

2679.	Sound can travel through _____________.
Answer» Sound can travel through _____________.

Discussion

2680.	The coefficient of friction between a block and surfaces A, B and C are 0.2, 0. 3 and 0.4 respectively. If the same mass m is placed on three surfaces, the force needed to move it is greatest in
Answer» The coefficient of friction between a block and surfaces A, B and C are 0.2, 0. 3 and 0.4 respectively. If the same mass $m$ is placed on three surfaces, the force needed to move it is greatest in

Discussion

2681.	7.Give the definition of bridge bonding and back bonding.describe it.
Answer» 7.Give the definition of bridge bonding and back bonding.describe it.

Discussion

2682.	Which of the following is/are correct processes that take place at cathode and anode during electroplating?
Answer» Which of the following is/are correct processes that take place at cathode and anode during electroplating?

Discussion

2683.	50. A mirror of radius of curvature 20cm and an object which is placed at distance 15cm both are moving with velocity 1m/s and 10m/s as shown in the figure. Find velocity of the imag
Answer» 50. A mirror of radius of curvature 20cm and an object which is placed at distance 15cm both are moving with velocity 1m/s and 10m/s as shown in the figure. Find velocity of the imag

Discussion

2684.	if 2160=2power a3power b5power c find value of a b c
Answer» if 2160=2power a3power b5power c find value of a b c

Discussion

2685.	A multistory building has 25 floors above the ground level each of height 5 m. it also has 3 floors in the basement each of height 5m. A lift in building moves at a rate of 1ms. If a man starts from 50m above the ground, how long will it take him to reach 2nd floor of the basement?
Answer» A multistory building has 25 floors above the ground level each of height 5 m. it also has 3 floors in the basement each of height 5m. A lift in building moves at a rate of $\frac{1 m}{s}$ . If a man starts from 50m above the ground, how long will it take him to reach 2nd floor of the basement?

Discussion

2686.	I have a doubt whether this lesson"chemical effects of electric current" is physics or chemistry? in school chemistry In byjus physics Don't give me as rellavent question already I got that reply
Answer» I have a doubt whether this lesson"chemical effects of electric current" is physics or chemistry? in school chemistry In byjus physics Don't give me as rellavent question already I got that reply

Discussion

2687.	The displacement of a particle is given by y=a+bt+ct2+dt4. The initial velocity and acceleration are respectively
Answer» The displacement of a particle is given by y=a+bt+ct2+dt4. The initial velocity and acceleration are respectively

Discussion

2688.	A closed can of soda is thrown in the sea. After a certain depth the can starts getting crushed. What is the reason behind this phenomenon? If we take it to mount everest, what will happen? [3 MARKS]
Answer» A closed can of soda is thrown in the sea. After a certain depth the can starts getting crushed. What is the reason behind this phenomenon? If we take it to mount everest, what will happen? [3 MARKS]

2688.

A closed can of soda is thrown in the sea. After a certain depth the can starts getting crushed. What is the reason behind this phenomenon? If we take it to mount everest, what will happen? [3 MARKS]

Answer»

A closed can of soda is thrown in the sea. After a certain depth the can starts getting crushed. What is the reason behind this phenomenon? If we take it to mount everest, what will happen? [3 MARKS]

Discussion

2689.	In doubling the mass and acceleration of the mass, the force acting on the mass with respect to the previous value
Answer» In doubling the mass and acceleration of the mass, the force acting on the mass with respect to the previous value

Discussion

2690.	34.a sinusoidal wave y=Asin(kx-wt). find ratio of max particle velocity to wave velocity
Answer» 34.a sinusoidal wave y=Asin(kx-wt). find ratio of max particle velocity to wave velocity

Discussion

2691.	What kind of friction comes into play: (a) when a block of wood kept on table moves slowly? (b) when a block of wood kept on table just tends to move (or slip)? (c) when a block of wood kept on cylindrical iron rods moves?
Answer» What kind of friction comes into play: (a) when a block of wood kept on table moves slowly? (b) when a block of wood kept on table just tends to move (or slip)? (c) when a block of wood kept on cylindrical iron rods moves?

Discussion

2692.	A particle moves in a straight line such that its acceleration a varies with v as a=-2\sqrt[2]v where v is measured in m/s. If intital velocity is 4m/s, the n time taken by the particle to stop is?
Answer» A particle moves in a straight line such that its acceleration a varies with v as a=-2\sqrt[2]v where v is measured in m/s. If intital velocity is 4m/s, the n time taken by the particle to stop is?

Discussion

2693.	In which direction does a freely suspended magnet align?
Answer» In which direction does a freely suspended magnet align?

Discussion

2694.	Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and(ii) pitch.
Answer» Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch.

2694.

Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and(ii) pitch.

Answer»

Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their

(i) loudness, and

(ii) pitch.

Discussion

2695.	If a positively charged object has an affinity to attract another body then what charge does the other body possesses.
Answer» If a positively charged object has an affinity to attract another body then what charge does the other body possesses.

Discussion

2696.	How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?
Answer» How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?

Discussion

2697.	Which of the following is an application of a convex mirror?
Answer» Which of the following is an application of a convex mirror?

Discussion

2698.	If we denote speed by S, distance by D and time by T, then the relationship between these quantities is
Answer» If we denote speed by $S$ , distance by $D$ and time by $T$ , then the relationship between these quantities is

Discussion

2699.	Two metal balls of radius R and 2R falling through a fluid have same velocity at some point. The viscous drag acting on them at that instant are in the ratio(1) 1:2(2) 1:4(3) 1:(2)^(1/2)(4) (2)^(1/2):1
Answer» Two metal balls of radius R and 2R falling through a fluid have same velocity at some point. The viscous drag acting on them at that instant are in the ratio (1) 1:2 (2) 1:4 (3) 1:(2)^(1/2) (4) (2)^(1/2):1

Discussion

2700.	Draw a map of your class room using proper scale and symbols for different objects.
Answer» Draw a map of your class room using proper scale and symbols for different objects.

Discussion

Explore topic-wise InterviewSolutions in .

Our milky way galaxy consists of millions of stars that make it more shiny in the black sky. Which powerful source of energy has turned The Identity of Milky Way into a huge Galaxy consisting of all the all the celestial bodies on a proper place with proper atmosphere.

It requires 40ml of 1M HxA to react completely with 20ml of 1M Ca(OH)2. What is the value of X?

Question 25Explain with a diagram how you can locate pole star with the help of the constellation Great Bear (Ursa Major).

If s-p mixing is not operative then bond order andmagnetic nature of B2 is(1) 1, paramagnetic(2) 1, diamagnetic(3) 0, diamagnetic(4) 2, paramagnetic

An arc lamp operates at 80v 10a. Suggest a method to use it with 240v DC source. Calculate the value of the electric component required for this purpose

Speed = Distance × _______

Question 24 Figure shows the word REST written in two ways in front of a mirror. Show how the word would appear in the mirror.

Question 5 (c)Give reason.Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

The turbine at the Niagara falls is 50 m deep. The average horse power developed is 500. If the efficiency of the generator is 85%, how much water passes through the turbine per minute?

A mass of 4 kg explodes in 2 parts:- 1 kg and 3 kg. If the 1 kg mass has a velicity 30 m/s, then calculate work done by internal force?

Capacitor works through the process of

a block of mass m placed on a rough inclined plane and the block is at rest on the inclined plane . find tge force exerted by tge inclined plane on tge block

A small block slides without friction down an inclined plane starting from rest. Let S_n be the dis†an ce travelled from t=n-1 to t=n. Then, S_n/S_{n+1} is (1) 2n-1/2n (2) 2n+1/2n-1 (3) 2n-1/2n+1 (4) 2n/2n+1

What is the enthalpy of formation of ions in general ? Like enthalpy of formation of proton and hydroxyl ion ?

Question 19Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether temperature of the steam was higher than that of the water boiling in the kettle. Comment.

No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be(a) only plane.(b) only concave.(c) only convex.(d) either plane or convex.

How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? Explain the concept in Kaleidoscope. [3 MARKS]

State two precautions to be observed while measuring length with the help of a metre scale.

Kinetic energy of the particle depends on the square of speed of the particle. If error in the measurement of speed is 40% then error in the measurement of the kinetic energy will be

Splitting of light into its component colours is known as:

Which side of the Moon can never be seen from the Earth?

The maximum tension in the string of a simple pendulum is 1.2 times the minimum tension. Find the angular amplitude (thita) of that pendulum.

it is easier to turn steering wheel of a large diameter then a small diameter .give reason

In a premise, 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW are used for 5 h per day. Find: (a) total power consumed per day, (b) total power consumed in 30 days. (c) total electric energy consumed in 30 days. (d) the cost of electricity at the rate of Rs 6.25 per unit.

Least amount of friction is required in which of the following sports?

76 A constant force acting on a body of mass 3Kg changes its speed from 2m/s to 3.5m/s in 25 s. In the direction of the motion of the body. What is the magnitude and direction of the force?

Two slits are seperated by 0.3mm. A beam of 500nm light strikes the slits producing an interference pattern. The number of maxima observed in the angular range -30^°

Sound can travel through _____________.

The coefficient of friction between a block and surfaces A, B and C are 0.2, 0. 3 and 0.4 respectively. If the same mass m is placed on three surfaces, the force needed to move it is greatest in

7.Give the definition of bridge bonding and back bonding.describe it.

Which of the following is/are correct processes that take place at cathode and anode during electroplating?

50. A mirror of radius of curvature 20cm and an object which is placed at distance 15cm both are moving with velocity 1m/s and 10m/s as shown in the figure. Find velocity of the imag

if 2160=2power a*3power b*5power c find value of a b c

A multistory building has 25 floors above the ground level each of height 5 m. it also has 3 floors in the basement each of height 5m. A lift in building moves at a rate of 1ms. If a man starts from 50m above the ground, how long will it take him to reach 2nd floor of the basement?

I have a doubt whether this lesson"chemical effects of electric current" is physics or chemistry? in school chemistry In byjus physics Don't give me as rellavent question already I got that reply

The displacement of a particle is given by y=a+bt+ct2+dt4. The initial velocity and acceleration are respectively

A closed can of soda is thrown in the sea. After a certain depth the can starts getting crushed. What is the reason behind this phenomenon? If we take it to mount everest, what will happen? [3 MARKS]

In doubling the mass and acceleration of the mass, the force acting on the mass with respect to the previous value

34.a sinusoidal wave y=Asin(kx-wt). find ratio of max particle velocity to wave velocity

What kind of friction comes into play: (a) when a block of wood kept on table moves slowly? (b) when a block of wood kept on table just tends to move (or slip)? (c) when a block of wood kept on cylindrical iron rods moves?

A particle moves in a straight line such that its acceleration a varies with v as a=-2\sqrt[2]v where v is measured in m/s. If intital velocity is 4m/s, the n time taken by the particle to stop is?

In which direction does a freely suspended magnet align?

Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and(ii) pitch.

If a positively charged object has an affinity to attract another body then what charge does the other body possesses.

How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?

Which of the following is an application of a convex mirror?

If we denote speed by S, distance by D and time by T, then the relationship between these quantities is

Two metal balls of radius R and 2R falling through a fluid have same velocity at some point. The viscous drag acting on them at that instant are in the ratio(1) 1:2(2) 1:4(3) 1:(2)^(1/2)(4) (2)^(1/2):1

Draw a map of your class room using proper scale and symbols for different objects.

if 2160=2power a3power b5power c find value of a b c