6277 + Interview Questions in Physics Page 49 InterviewSolution

2401.	What colour of light is obtained when we mix beams of light of all colour?
Answer» What colour of light is obtained when we mix beams of light of all colour?

Discussion

2402.	Speed of light
Answer» Speed of light

Discussion

2403.	Figure shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Label these parts and specify their function.
Answer» Figure shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Label these parts and specify their function.

Discussion

2404.	The colour of red rose is
Answer» The colour of red rose is

Discussion

2405.	Simplify the given function and find the physical unit whose formula is represented WIRVt. Where, W- work I – Current R- Resistance V- Volt t- Time
Answer» Simplify the given function and find the physical unit whose formula is represented $\frac{W I R}{V t}$ . Where, W- work I – Current R- Resistance V- Volt t- Time

Discussion

2406.	What will be the escape speed from a planet having radius thrice that of the earth and the same mean density as that of the earth? (Take V_e= 11.2 km/s)
Answer» What will be the escape speed from a planet having radius thrice that of the earth and the same mean density as that of the earth? (Take V_e= 11.2 km/s)

Discussion

2407.	Given that P = Po cos (t/P - qx), where t represents time in second and x represents distance in meter. Which of the following statements is false? (1) P and Po have same unit (2) t/P have same unit as
Answer» Given that P = Po cos (t/P - qx), where t represents time in second and x represents distance in meter. Which of the following statements is false? (1) P and Po have same unit (2) t/P have same unit as

Discussion

2408.	What is electrification of clouds? How does lightning 🌩 happen? Why does lightning happen?
Answer» What is electrification of clouds? How does lightning 🌩 happen? Why does lightning happen?

Discussion

2409.	{ 7. Show that if a body is taken to a height }H above the }} earth's surface, acceleration due to gravity is }{ decreased by the factor }R^2/(R+H)^2, where }R is the }} radius of the earth.
Answer» { 7. Show that if a body is taken to a height }H above the }} earth's surface, acceleration due to gravity is }{ decreased by the factor }R^2/(R+H)^2, where }R is the }} radius of the earth.

Discussion

2410.	The temperature of a gas placed in an open container is raised from 27 227 .The percentage of the original amount of the gas expelled from the container will be
Answer» The temperature of a gas placed in an open container is raised from 27 227 .The percentage of the original amount of the gas expelled from the container will be

Discussion

2411.	Question 2Write the coordinates of the vertices of a rectangle whose length and breadth are 5 and 3 units respectively, one vertex at the origin, the longer side lies on the X-axis and one of the vertices lies In the third quadrant.
Answer» Question 2 Write the coordinates of the vertices of a rectangle whose length and breadth are 5 and 3 units respectively, one vertex at the origin, the longer side lies on the X-axis and one of the vertices lies In the third quadrant.

Discussion

2412.	Alex asked a blacksmith to make a metal cap for his grandfather's walking stick. After the cap was made, it has been observed that it should slightly be bigger to be attached to the walking stick. Provide Alex with a solution to his problem.
Answer» Alex asked a blacksmith to make a metal cap for his grandfather's walking stick. After the cap was made, it has been observed that it should slightly be bigger to be attached to the walking stick. Provide Alex with a solution to his problem.

Discussion

2413.	(i) Which is more fundamental, the mass of a body or its weight? Why?(ii) How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer.(iii) Can a body have mass but no weight? Give reasons for your answer.
Answer» (i) Which is more fundamental, the mass of a body or its weight? Why? (ii) How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer. (iii) Can a body have mass but no weight? Give reasons for your answer.

Discussion

2414.	How is friction between coins and carrom board affected when some powder is sprinkled on the carrom board?
Answer» How is friction between coins and carrom board affected when some powder is sprinkled on the carrom board?

Discussion

2415.	Which of the following constellations belong to the family of the twelve zodiac signs?
Answer» Which of the following constellations belong to the family of the twelve zodiac signs?

Discussion

2416.	98. Vapour density of air(considering air as 80% N2 and 20%O2) A)0.001293 B)1.293 C)14.4 D)28.9
Answer» 98. Vapour density of air(considering air as 80% N2 and 20%O2) A)0.001293 B)1.293 C)14.4 D)28.9

Discussion

2417.	Which of the following device is used for navigation?
Answer» Which of the following device is used for navigation?

Discussion

2418.	Draw the given diagram in your answer book and complete it for the path of a ray of light beyond the lens.(a) What type of lens is shown in this diagram?(b) Is it a converging lens or a diverging lens?
Answer» Draw the given diagram in your answer book and complete it for the path of a ray of light beyond the lens. (a) What type of lens is shown in this diagram? (b) Is it a converging lens or a diverging lens?

Discussion

2419.	_______ is the property of magnet by which it attracts iron pieces or other magnetic materials.
Answer» _______ is the property of magnet by which it attracts iron pieces or other magnetic materials.

Discussion

2420.	The excess pressure inside a liquid drop is (here Sla is the surface tension between the liquid-air interface)
Answer» The excess pressure inside a liquid drop is (here S_la is the surface tension between the liquid-air interface)

Discussion

2421.	Does heat energy bring about a change in mass ?
Answer» Does heat energy bring about a change in mass ?

Discussion

2422.	A light ray is incident normally on the face AB of a right-angled prism ABC (μ=1.50) as shown in figure. What is the largest angle ϕ for which the light ray is totally reflected at the surface AC ?
Answer» A light ray is incident normally on the face AB of a right-angled prism ABC $(μ = 1.50)$ as shown in figure. What is the largest angle $ϕ$ for which the light ray is totally reflected at the surface AC ?

2422.

A light ray is incident normally on the face AB of a right-angled prism ABC (μ=1.50) as shown in figure. What is the largest angle ϕ for which the light ray is totally reflected at the surface AC ?

Answer»

A light ray is incident normally on the face AB of a right-angled prism ABC $(μ = 1.50)$ as shown in figure. What is the largest angle $ϕ$ for which the light ray is totally reflected at the surface AC ?

Discussion

2423.	Diffusion does not involve ______.
Answer» Diffusion does not involve ______.

Discussion

2424.	67.A 5C charge experiences force of 2000N when moved between two points along field seperated by distance of 2cm in uniform electric field . The potential difference between two points is ?
Answer» 67.A 5C charge experiences force of 2000N when moved between two points along field seperated by distance of 2cm in uniform electric field . The potential difference between two points is ?

Discussion

2425.	Which of the following is a good insulator and conductor pair?
Answer» Which of the following is a good insulator and conductor pair?

Discussion

2426.	Q. "Flash droughts, during Indian monsoons, are detrimental in India due to intensive agriculture primarily in the rain-fed regions". In this context, discuss the reasons for the occurrence of flash droughts and suggest measures to reduce its impacts.
Answer» Q. "Flash droughts, during Indian monsoons, are detrimental in India due to intensive agriculture primarily in the rain-fed regions". In this context, discuss the reasons for the occurrence of flash droughts and suggest measures to reduce its impacts.

Discussion

2427.	Calculate the number of 1.5 V cells required to make a 12 V battery.
Answer» Calculate the number of 1.5 V cells required to make a 12 V battery.

Discussion

2428.	75.what is the origin of friction?
Answer» 75.what is the origin of friction?

Discussion

2429.	A bar magnet has pole strength 5 A/m magnetic length 20cm area 2.5cm then magnetic dipole monent and magnetization are
Answer» A bar magnet has pole strength 5 A/m magnetic length 20cm area 2.5cm then magnetic dipole monent and magnetization are

Discussion

2430.	A piece of iron is heated in a flame. If first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using (a) Stefan's law (b) Wien's displacement law (c) Kirchoff's law (d) Newton's law of cooling
Answer» A piece of iron is heated in a flame. If first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using (a) Stefan's law (b) Wien's displacement law (c) Kirchoff's law (d) Newton's law of cooling

Discussion

2431.	Matt has a magnet which is pointing in the North-South direction. He brings a large magnet which is not pointing in the North-South direction close to it. Can you tell what will happen to the first magnet?
Answer» Matt has a magnet which is pointing in the North-South direction. He brings a large magnet which is not pointing in the North-South direction close to it. Can you tell what will happen to the first magnet?

Discussion

2432.	Which one of the following statements is not true about thermal radiations?
Answer» Which one of the following statements is not true about thermal radiations?

Discussion

2433.	115.(2000)rase to power 2001 is divided by 26 then what is the remiander
Answer» 115.(2000)rase to power 2001 is divided by 26 then what is the remiander

Discussion

2434.	what is shadow and how is it formed form
Answer» what is shadow and how is it formed form

Discussion

2435.	a circut having seven seven ohm resistors connected to a 14v battery
Answer» a circut having seven seven ohm resistors connected to a 14v battery

Discussion

2436.	The area of a square(in cm2) with side 7 cm will be:49
Answer» The area of a square(in $c m^{2}$ ) with side 7 cm will be: 49

2436.

The area of a square(in cm2) with side 7 cm will be:49

Answer»

The area of a square(in $c m^{2}$ ) with side 7 cm will be:

49

Discussion

2437.	a luminous object is placed 20cm from the surface of a convex mirror and a plane mirror set so that the virtual images formed in the two Mirrors coincide if the plane mirror is at a dis†an ce of 15 cm from the object then focal length of the convex mirror is
Answer» a luminous object is placed 20cm from the surface of a convex mirror and a plane mirror set so that the virtual images formed in the two Mirrors coincide if the plane mirror is at a dis†an ce of 15 cm from the object then focal length of the convex mirror is

Discussion

2438.	Question 3 If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be (a) 2m (b) 1m (c) 0.5m (d) 0.25m
Answer» Question 3 If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be (a) 2m (b) 1m (c) 0.5m (d) 0.25m

2438.

Question 3 If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be (a) 2m (b) 1m (c) 0.5m (d) 0.25m

Answer»

Question 3

If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be

(a) 2m

(b) 1m

(c) 0.5m

(d) 0.25m

Discussion

2439.	It a balloon burst so we can blow up the remaining part
Answer» It a balloon burst so we can blow up the remaining part

Discussion

2440.	When we will put a transparent bottle in hot water, what type of pressure is build in it?
Answer» When we will put a transparent bottle in hot water, what type of pressure is build in it?

Discussion

2441.	Identify the countable noun in the sentence. I drank a glass of milk because I was hungry.
Answer» Identify the countable noun in the sentence. I drank a glass of milk because I was hungry.

2441.

Identify the countable noun in the sentence. I drank a glass of milk because I was hungry.

Answer»

Identify the countable noun in the sentence.

I drank a glass of milk because I was hungry.

Discussion

2442.	State the energy changes that occur while charging and discharging the mobile battery.
Answer» State the energy changes that occur while charging and discharging the mobile battery.

Discussion

2443.	Why does the thermometer used to measure body temperature have a long rather than a round bulb?
Answer» Why does the thermometer used to measure body temperature have a long rather than a round bulb?

Discussion

2444.	When a 3ohm resis†an ce coil is connected across the terminal of a battery , the current is 1.5A. When a 5 ohm resis†an ce is connected across the same battery, the current is 1A. Find the internal resis†an ce of the battery
Answer» When a 3ohm resis†an ce coil is connected across the terminal of a battery , the current is 1.5A. When a 5 ohm resis†an ce is connected across the same battery, the current is 1A. Find the internal resis†an ce of the battery

Discussion

2445.	a resis†an ce coil , wired to an external battery is placed inside a thermally insulated cylinder fitted with a frictionless piston and containing an ideal gas a current i=240mA flows through the coil which has resis†an ce 490 ohm at what cons†an t speed v must the piston of mass m =12kg move upward in order that the temperature of the gas remains unchanged (assume that 60% energy is utilised to do work by the gass and neglect work done by atm
Answer» a resis†an ce coil , wired to an external battery is placed inside a thermally insulated cylinder fitted with a frictionless piston and containing an ideal gas a current i=240mA flows through the coil which has resis†an ce 490 ohm at what cons†an t speed v must the piston of mass m =12kg move upward in order that the temperature of the gas remains unchanged (assume that 60% energy is utilised to do work by the gass and neglect work done by atm

Discussion

2446.	Question 20Why does a block of plastic released under water come up to the surface of water?
Answer» Question 20 Why does a block of plastic released under water come up to the surface of water?

Discussion

2447.	47.An athlète took 4 rounds of à track such that Line of start and finish are at thé Same point. Suppose thé length of track is 200m. Find total distance and displacement of athlète ?
Answer» 47.An athlète took 4 rounds of à track such that Line of start and finish are at thé Same point. Suppose thé length of track is 200m. Find total distance and displacement of athlète ?

Discussion

2448.	A vessel containing a liquid has a cons†an t acceleration 19.6m/s2 in horizontal direction. The free surface of water gets sloped qith horizontal at angle
Answer» A vessel containing a liquid has a cons†an t acceleration 19.6m/s2 in horizontal direction. The free surface of water gets sloped qith horizontal at angle

Discussion

2449.	Which type of reflection will take place when light is incident on a highly polished surface?
Answer» Which type of reflection will take place when light is incident on a highly polished surface?

Discussion

2450.	nta particle is projected from ground with speed 80m/s at an angle 30 with horizontal from ground. the magnitude of average velocity of particle in time interval t=2s to t=6s is?n
Answer» nta particle is projected from ground with speed 80m/s at an angle 30 with horizontal from ground. the magnitude of average velocity of particle in time interval t=2s to t=6s is?n

Discussion

Explore topic-wise InterviewSolutions in .

What colour of light is obtained when we mix beams of light of all colour?

Speed of light

Figure shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Label these parts and specify their function.

The colour of red rose is

Simplify the given function and find the physical unit whose formula is represented WIRVt. Where, W- work I – Current R- Resistance V- Volt t- Time

What will be the escape speed from a planet having radius thrice that of the earth and the same mean density as that of the earth? (Take V_e= 11.2 km/s)

Given that P = Po cos (t/P - qx), where t represents time in second and x represents distance in meter. Which of the following statements is false? (1) P and Po have same unit (2) t/P have same unit as

What is electrification of clouds? How does lightning 🌩 happen? Why does lightning happen?

{ 7. Show that if a body is taken to a height }H above the }} earth's surface, acceleration due to gravity is }{ decreased by the factor }R^2/(R+H)^2, where }R is the }} radius of the earth.

The temperature of a gas placed in an open container is raised from 27 227 .The percentage of the original amount of the gas expelled from the container will be

Question 2Write the coordinates of the vertices of a rectangle whose length and breadth are 5 and 3 units respectively, one vertex at the origin, the longer side lies on the X-axis and one of the vertices lies In the third quadrant.

Alex asked a blacksmith to make a metal cap for his grandfather's walking stick. After the cap was made, it has been observed that it should slightly be bigger to be attached to the walking stick. Provide Alex with a solution to his problem.

(i) Which is more fundamental, the mass of a body or its weight? Why?(ii) How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer.(iii) Can a body have mass but no weight? Give reasons for your answer.

How is friction between coins and carrom board affected when some powder is sprinkled on the carrom board?

Which of the following constellations belong to the family of the twelve zodiac signs?

98. Vapour density of air(considering air as 80% N2 and 20%O2) A)0.001293 B)1.293 C)14.4 D)28.9

Which of the following device is used for navigation?

Draw the given diagram in your answer book and complete it for the path of a ray of light beyond the lens.(a) What type of lens is shown in this diagram?​(b) Is it a converging lens or a diverging lens?

_______ is the property of magnet by which it attracts iron pieces or other magnetic materials.

The excess pressure inside a liquid drop is (here Sla is the surface tension between the liquid-air interface)

Does heat energy bring about a change in mass ?

A light ray is incident normally on the face AB of a right-angled prism ABC (μ=1.50) as shown in figure. What is the largest angle ϕ for which the light ray is totally reflected at the surface AC ?

Diffusion does not involve ______.

67.A 5C charge experiences force of 2000N when moved between two points along field seperated by distance of 2cm in uniform electric field . The potential difference between two points is ?

Which of the following is a good insulator and conductor pair?

Q. "Flash droughts, during Indian monsoons, are detrimental in India due to intensive agriculture primarily in the rain-fed regions". In this context, discuss the reasons for the occurrence of flash droughts and suggest measures to reduce its impacts.

Calculate the number of 1.5 V cells required to make a 12 V battery.

75.what is the origin of friction?

A bar magnet has pole strength 5 A/m magnetic length 20cm area 2.5cm then magnetic dipole monent and magnetization are

A piece of iron is heated in a flame. If first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using (a) Stefan's law (b) Wien's displacement law (c) Kirchoff's law (d) Newton's law of cooling

Matt has a magnet which is pointing in the North-South direction. He brings a large magnet which is not pointing in the North-South direction close to it. Can you tell what will happen to the first magnet?

Which one of the following statements is not true about thermal radiations?

115.(2000)rase to power 2001 is divided by 26 then what is the remiander

what is shadow and how is it formed form

a circut having seven seven ohm resistors connected to a 14v battery

The area of a square(in cm2) with side 7 cm will be:49

a luminous object is placed 20cm from the surface of a convex mirror and a plane mirror set so that the virtual images formed in the two Mirrors coincide if the plane mirror is at a dis†an ce of 15 cm from the object then focal length of the convex mirror is

Question 3 If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be (a) 2m (b) 1m (c) 0.5m (d) 0.25m

It a balloon burst so we can blow up the remaining part

When we will put a transparent bottle in hot water, what type of pressure is build in it?

Identify the countable noun in the sentence. I drank a glass of milk because I was hungry.

State the energy changes that occur while charging and discharging the mobile battery.

Why does the thermometer used to measure body temperature have a long rather than a round bulb?

When a 3ohm resis†an ce coil is connected across the terminal of a battery , the current is 1.5A. When a 5 ohm resis†an ce is connected across the same battery, the current is 1A. Find the internal resis†an ce of the battery

Question 20Why does a block of plastic released under water come up to the surface of water?

47.An athlète took 4 rounds of à track such that Line of start and finish are at thé Same point. Suppose thé length of track is 200m. Find total distance and displacement of athlète ?

A vessel containing a liquid has a cons†an t acceleration 19.6m/s2 in horizontal direction. The free surface of water gets sloped qith horizontal at angle

Which type of reflection will take place when light is incident on a highly polished surface?

nta particle is projected from ground with speed 80m/s at an angle 30 with horizontal from ground. the magnitude of average velocity of particle in time interval t=2s to t=6s is?n

Draw the given diagram in your answer book and complete it for the path of a ray of light beyond the lens.(a) What type of lens is shown in this diagram?(b) Is it a converging lens or a diverging lens?