13232 + Interview Questions in Physics

1.	Compare the gravitational forces exerted by the Sun and the moon on the Earth. (Given: mass of the Sun, Ms=4×1031 kg, mass of moon, Mm=6.3×1022 kg, distance between the Sun and the Earth, r=1.3×1012 m and the distance between moon and the Earth, r=4.5×108 m).
Answer» Compare the gravitational forces exerted by the Sun and the moon on the Earth. (Given: mass of the Sun, $M_{s} = 4 \times 10^{31}$ kg, mass of moon, $M_{m} = 6.3 \times 10^{22}$ kg, distance between the Sun and the Earth, $r = 1.3 \times 10^{12}$ m and the distance between moon and the Earth, $r = 4.5 \times 10^{8}$ m).

Discussion

2.	Which one of the following does not consist of transverse waves ? (a) light emitted by a CFL. (b) TV signals from a satellite. (c) ripples on the surface of a pond (d) musical notes of an orchestra
Answer» Which one of the following does not consist of transverse waves ? (a) light emitted by a CFL. (b) TV signals from a satellite. (c) ripples on the surface of a pond (d) musical notes of an orchestra

2.

Which one of the following does not consist of transverse waves ? (a) light emitted by a CFL. (b) TV signals from a satellite. (c) ripples on the surface of a pond (d) musical notes of an orchestra

Answer»

Which one of the following does not consist of transverse waves ?

(a) light emitted by a CFL.

(b) TV signals from a satellite.

(c) ripples on the surface of a pond

(d) musical notes of an orchestra

Discussion

3.	Calculate the height through which a body of mass 0.5 kg is lifted if the energy spent in doing so is 1.0 J.Take g=10 m s−2.
Answer» Calculate the height through which a body of mass 0.5 kg is lifted if the energy spent in doing so is 1.0 J.Take g=10 m $s^{- 2}$ .

Discussion

4.	50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power.
Answer» 50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power.

Discussion

5.	Imagine you are in a space shuttle and went to space but due to any reason you came out of the space shuttle in the space and now the space shuttle is about to go back then how will you enter inside the space shuttle back so that you can come along with it?
Answer» Imagine you are in a space shuttle and went to space but due to any reason you came out of the space shuttle in the space and now the space shuttle is about to go back then how will you enter inside the space shuttle back so that you can come along with it?

Discussion

6.	A one-litre flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains the same. What is the volume of mercury in the flask? Given the coefficient of linear expansion of glass is 9×10−6 ∘C−1 and the coefficient of volume expansion of mercury is 1.8×10−4 ∘C−1
Answer» A one-litre flask contains some mercury. It is found that at different temperatures the volume of air inside the flask remains the same. What is the volume of mercury in the flask? Given the coefficient of linear expansion of glass is $9 \times 10^{- 6}^{\circ} C^{- 1}$ and the coefficient of volume expansion of mercury is $1.8 \times 10^{- 4}^{\circ} C^{- 1}$

Discussion

7.	The pair of centripetal and centrifugal force can be represented by___
Answer» The pair of centripetal and centrifugal force can be represented by___

Discussion

8.	Complete the following dialogues by picking the correct option. Operator: Hello madam, how can I help you? Customer: This phone that I bought yesterday is acting up. Its battery is running out as we speak. Operator: i)_________________? Customer: ii)_________________. Operator: I suggest that you try it once. Customer: Ok, as per your suggestion, I will try restarting the phone.
Answer» Complete the following dialogues by picking the correct option. Operator: Hello madam, how can I help you? Customer: This phone that I bought yesterday is acting up. Its battery is running out as we speak. Operator: i)_________________? Customer: ii)_________________. Operator: I suggest that you try it once. Customer: Ok, as per your suggestion, I will try restarting the phone.

8.

Complete the following dialogues by picking the correct option. Operator: Hello madam, how can I help you? Customer: This phone that I bought yesterday is acting up. Its battery is running out as we speak. Operator: i)_? Customer: ii)_. Operator: I suggest that you try it once. Customer: Ok, as per your suggestion, I will try restarting the phone.

Answer»

Complete the following dialogues by picking the correct option.

Operator: Hello madam, how can I help you?

Customer: This phone that I bought yesterday is acting up. Its battery is running out as we speak.

Operator: i)_________________?

Customer: ii)_________________.

Operator: I suggest that you try it once.

Customer: Ok, as per your suggestion, I will try restarting the phone.

Discussion

9.	A pirate ship is looking for a sunken ship under sea.SONAR was launched vertically downwards and it took 2.32s to come back.If the seabed is 1700m , have the found a sunken ship? If yes, what's the height of the sunken ship?
Answer» A pirate ship is looking for a sunken ship under sea.SONAR was launched vertically downwards and it took 2.32s to come back.If the seabed is 1700m , have the found a sunken ship? If yes, what's the height of the sunken ship?

Discussion

10.	What is relative density?
Answer» What is relative density?

Discussion

11.	In which radioactive disintegration does the neutron dissociate into proton and electron?
Answer» In which radioactive disintegration does the neutron dissociate into proton and electron?

Discussion

12.	How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that aμω=43)
Answer» How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that $_{a} μ_{ω} = \frac{4}{3}$ )

Discussion

13.	Time period of a sound wave is defined as
Answer» Time period of a sound wave is defined as

Discussion

14.	A body is thrown vertically up with a velocity 98 m/s. How much high it will rise ? (g = 9.8 m/s2). Give your answer in metres. __
Answer» A body is thrown vertically up with a velocity 98 m/s. How much high it will rise ? (g = 9.8 $m / s^{2}$ ). Give your answer in metres. __

Discussion

15.	The product of forceand the duration of time for which it acts on a body is equal to the
Answer» The product of forceand the duration of time for which it acts on a body is equal to the

Discussion

16.	What happens to the weight of our body when we stand in a sea with waves?
Answer» What happens to the weight of our body when we stand in a sea with waves?

Discussion

17.	What is a blackhole ?
Answer» What is a blackhole ?

Discussion

18.	Q32. Consider the following pairs: Energy project Associated Location 1. Nuclear Energy : Kota 2. Wind Energy : Kuchchh 3. Geothermal Energy: Manikaran Which of the pairs given above is/are correctly matched?
Answer» Q32. Consider the following pairs: Energy project Associated Location 1. Nuclear Energy : Kota 2. Wind Energy : Kuchchh 3. Geothermal Energy: Manikaran Which of the pairs given above is/are correctly matched?

18.

Q32. Consider the following pairs: Energy project Associated Location 1. Nuclear Energy : Kota 2. Wind Energy : Kuchchh 3. Geothermal Energy: Manikaran Which of the pairs given above is/are correctly matched?

Answer»

Q32. Consider the following pairs:

Energy project Associated Location

1. Nuclear Energy : Kota

2. Wind Energy : Kuchchh

3. Geothermal Energy: Manikaran

Which of the pairs given above is/are correctly matched?

Discussion

19.	What does the area below v – t graph give?
Answer» What does the area below v – t graph give?

Discussion

20.	1 kg piece of copper is drawn into a wire of 1 mm thickness, and another 1 kg copper piece into a wire of 2 mm thickness. What is the ratio of the resistance of these two wires respectively?
Answer» 1 kg piece of copper is drawn into a wire of 1 mm thickness, and another 1 kg copper piece into a wire of 2 mm thickness. What is the ratio of the resistance of these two wires respectively?

Discussion

21.	What is the equivalent resistance across A and B?
Answer» What is the equivalent resistance across A and B?

21.

What is the equivalent resistance across A and B?

Answer»

What is the equivalent resistance across A and B?

Discussion

22.	State two conditions when no work is done by a force.
Answer» State two conditions when no work is done by a force.

Discussion

23.	Can a body moving with a constant speed have acceleration?
Answer» Can a body moving with a constant speed have acceleration?

Discussion

24.	50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, the rise in its temperature is (specific heat of copper = 420J/kg/∘C, specific heat of water = 4200J/kg/∘C)
Answer» $50 g$ of copper is heated to increase its temperature by $10^{\circ} C$ . If the same quantity of heat is given to $10 g$ of water, the rise in its temperature is (specific heat of copper = $420 J / k g /^{\circ} C$ , specific heat of water = $4200 J / k g /^{\circ} C$ )

Discussion

25.	A cylindrical vessel of base radius 1 m and height 2m is completely filled with liquid of density 2 x 10 3 kg/m3. Thrust at the bottom =3 x 103, Ignore the atmospheric pressure and find the pressure exerted by the water at the bottom of the cylinder.
Answer» A cylindrical vessel of base radius 1 m and height 2m is completely filled with liquid of density 2 x 10 $^{3}$ kg/m $^{3}$ . Thrust at the bottom =3 x 10 $^{3}$ , Ignore the atmospheric pressure and find the pressure exerted by the water at the bottom of the cylinder.

Discussion

26.	The value of 'g' on a planet having radius and density twice that of earth will be
Answer» The value of 'g' on a planet having radius and density twice that of earth will be

Discussion

27.	Ultrasonic waves are made to reflect from various parts of the heart and form the image of the heart. This technique is called ___ .
Answer» Ultrasonic waves are made to reflect from various parts of the heart and form the image of the heart. This technique is called ___ .

Discussion

28.	Which component of a moving coil loudspeaker vibrates to produce sound?
Answer» Which component of a moving coil loudspeaker vibrates to produce sound?

Discussion

29.	Which of the following is not a satellite launched by India?
Answer» Which of the following is not a satellite launched by India?

Discussion

30.	What is net force?? ??
Answer» What is net force?? ??

Discussion

31.	When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero ?
Answer» When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero ?

Discussion

32.	It takes time 8 min for light to reach from the sun to the earth surface. If speed of light taken to be 3 × 108 ms−1, find the distance from the sun to the earth in km.
Answer» It takes time 8 min for light to reach from the sun to the earth surface. If speed of light taken to be 3 $\times$ 10 $^{8}$ ms $^{- 1}$ , find the distance from the sun to the earth in km.

Discussion

33.	Which of the following is the speed of sound in water and which in steel? (a) 5000 m/s (b) 1500 m/s (c) 340 m/s
Answer» Which of the following is the speed of sound in water and which in steel? (a) 5000 m/s (b) 1500 m/s (c) 340 m/s

33.

Which of the following is the speed of sound in water and which in steel? (a) 5000 m/s (b) 1500 m/s (c) 340 m/s

Answer»

Which of the following is the speed of sound in water and which in steel?

(a) 5000 m/s

(b) 1500 m/s

(c) 340 m/s

Discussion

34.	1 micron = ___ mm
Answer» 1 micron = ___ mm

Discussion

35.	What is potential energy ? State its unit.
Answer» What is potential energy ? State its unit.

Discussion

36.	Which is the only force acting on an object during free fall
Answer» Which is the only force acting on an object during free fall

Discussion

37.	2 bodies having masses 2kg and 4kg respectively are seperated by 2m. Where a body of mass 1kg should be placed so that the gravitational force on this body due to bodies A and B is zero?
Answer» 2 bodies having masses 2kg and 4kg respectively are seperated by 2m. Where a body of mass 1kg should be placed so that the gravitational force on this body due to bodies A and B is zero?

Discussion

38.	Pick the odd one out giving reason(a) Eardrum, oval window, multiple refraction, auditory nerves(b) Sound, water, vacuum, Steel, air(c) Amplitude of vibration, quantity of vibrating air, frequency, decibel(d) Hearing loss, high blood pressure, physical pain, noise
Answer» Pick the odd one out giving reason (a) Eardrum, oval window, multiple refraction, auditory nerves (b) Sound, water, vacuum, Steel, air (c) Amplitude of vibration, quantity of vibrating air, frequency, decibel (d) Hearing loss, high blood pressure, physical pain, noise

38.

Pick the odd one out giving reason(a) Eardrum, oval window, multiple refraction, auditory nerves(b) Sound, water, vacuum, Steel, air(c) Amplitude of vibration, quantity of vibrating air, frequency, decibel(d) Hearing loss, high blood pressure, physical pain, noise

Answer»

Pick the odd one out giving reason

(a) Eardrum, oval window, multiple refraction, auditory nerves

(b) Sound, water, vacuum, Steel, air

(c) Amplitude of vibration, quantity of vibrating air, frequency, decibel

(d) Hearing loss, high blood pressure, physical pain, noise

Discussion

39.	All definition of laws of motion
Answer» All definition of laws of motion

Discussion

40.	Two car,ferrari and BMW are having a competition for highest speed. Ferrari can accelerate with 20m/s² till 5 seconds and BMW can accelerate with 17m/s² up to 6 seconds.Who wins the race?
Answer» Two car,ferrari and BMW are having a competition for highest speed. Ferrari can accelerate with 20m/s² till 5 seconds and BMW can accelerate with 17m/s² up to 6 seconds.Who wins the race?

Discussion

41.	How do we measured super conductor and what is the formula of it and where is found the super conductor
Answer» How do we measured super conductor and what is the formula of it and where is found the super conductor

Discussion

42.	How many vibration will a running fork of frequency 280hz will complete during the time sound travel formed in air by 20m. Take speed of sound in air as 340m/s
Answer» How many vibration will a running fork of frequency 280hz will complete during the time sound travel formed in air by 20m. Take speed of sound in air as 340m/s

Discussion

43.	Which of the following statement is false? 1. If speed is zero , it's velocity also must be zero. 2. if velocity is zero , then it's speed need not be zero 3. If speed is constant , then it's speed must be constant . 4. If velocity is constant , then it's speed must be constant.
Answer» Which of the following statement is false? 1. If speed is zero , it's velocity also must be zero. 2. if velocity is zero , then it's speed need not be zero 3. If speed is constant , then it's speed must be constant . 4. If velocity is constant , then it's speed must be constant.

43.

Which of the following statement is false? 1. If speed is zero , it's velocity also must be zero. 2. if velocity is zero , then it's speed need not be zero 3. If speed is constant , then it's speed must be constant . 4. If velocity is constant , then it's speed must be constant.

Answer»

Which of the following statement is false?

1. If speed is zero , it's velocity also must be zero.

2. if velocity is zero , then it's speed need not be zero

3. If speed is constant , then it's speed must be constant .

4. If velocity is constant , then it's speed must be constant.

Discussion

44.	The given figure shows a bucket being whirled around in a vertical circle with a help of a string with very high constant speed. What is a correlation between above action and the motion of the moon around the earth?
Answer» The given figure shows a bucket being whirled around in a vertical circle with a help of a string with very high constant speed. What is a correlation between above action and the motion of the moon around the earth?

Discussion

45.	A body of mass 5 kg is moving with velocity 2ms−1. Calculate its linear momentum.
Answer» A body of mass 5 kg is moving with velocity $2 m s^{- 1} .$ Calculate its linear momentum.

Discussion

46.	A particle is continously moving on a circular path. Which of the following could be the distance and displacement of the particle between a point and its diagonally opposite point?
Answer» A particle is continously moving on a circular path. Which of the following could be the distance and displacement of the particle between a point and its diagonally opposite point?

Discussion

47.	The displacement-time equation is:
Answer» The displacement-time equation is:

Discussion

48.	Give two reasons why water is not a suitable barometric liquid.
Answer» Give two reasons why water is not a suitable barometric liquid.

Discussion

49.	The options show a v-shaped object placed in different orientations on a surface. In which orientation does the object exert maximum pressure?
Answer» The options show a v-shaped object placed in different orientations on a surface. In which orientation does the object exert maximum pressure?

Discussion

50.	A convex lens of focal length 10 cm is placed at a distance of 12 cm from a wall. How far from the lens should an object be placed so as to form its real image on the wall?
Answer» A convex lens of focal length $10 c m$ is placed at a distance of $12 c m$ from a wall. How far from the lens should an object be placed so as to form its real image on the wall?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Compare the gravitational forces exerted by the Sun and the moon on the Earth. (Given: mass of the Sun, Ms=4×1031 kg, mass of moon, Mm=6.3×1022 kg, distance between the Sun and the Earth, r=1.3×1012 m and the distance between moon and the Earth, r=4.5×108 m).

Which one of the following does not consist of transverse waves ? (a) light emitted by a CFL. (b) TV signals from a satellite. (c) ripples on the surface of a pond (d) musical notes of an orchestra

Calculate the height through which a body of mass 0.5 kg is lifted if the energy spent in doing so is 1.0 J.Take g=10 m s−2.

50kJ of energy causes a displacement of 25m in a body in the direction of force in 2.5s. Find the power in a unit of horse power.

Imagine you are in a space shuttle and went to space but due to any reason you came out of the space shuttle in the space and now the space shuttle is about to go back then how will you enter inside the space shuttle back so that you can come along with it?

The pair of centripetal and centrifugal force can be represented by___

A pirate ship is looking for a sunken ship under sea.SONAR was launched vertically downwards and it took 2.32s to come back.If the seabed is 1700m , have the found a sunken ship? If yes, what's the height of the sunken ship?

What is relative density?

In which radioactive disintegration does the neutron dissociate into proton and electron?

How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that aμω=43)

Time period of a sound wave is defined as

A body is thrown vertically up with a velocity 98 m/s. How much high it will rise ? (g = 9.8 m/s2). Give your answer in metres. __

The product of forceand the duration of time for which it acts on a body is equal to the

What happens to the weight of our body when we stand in a sea with waves?

What is a blackhole ?

Q32. Consider the following pairs: Energy project Associated Location 1. Nuclear Energy : Kota 2. Wind Energy : Kuchchh 3. Geothermal Energy: Manikaran Which of the pairs given above is/are correctly matched?

What does the area below v – t graph give?

1 kg piece of copper is drawn into a wire of 1 mm thickness, and another 1 kg copper piece into a wire of 2 mm thickness. What is the ratio of the resistance of these two wires respectively?

What is the equivalent resistance across A and B?

State two conditions when no work is done by a force.

Can a body moving with a constant speed have acceleration?

50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, the rise in its temperature is (specific heat of copper = 420J/kg/∘C, specific heat of water = 4200J/kg/∘C)

A cylindrical vessel of base radius 1 m and height 2m is completely filled with liquid of density 2 x 10 3 kg/m3. Thrust at the bottom =3 x 103, Ignore the atmospheric pressure and find the pressure exerted by the water at the bottom of the cylinder.

The value of 'g' on a planet having radius and density twice that of earth will be

Ultrasonic waves are made to reflect from various parts of the heart and form the image of the heart. This technique is called ___ .

Which component of a moving coil loudspeaker vibrates to produce sound?

Which of the following is not a satellite launched by India?

What is net force?? ??

When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero ?

It takes time 8 min for light to reach from the sun to the earth surface. If speed of light taken to be 3 × 108 ms−1, find the distance from the sun to the earth in km.

Which of the following is the speed of sound in water and which in steel? (a) 5000 m/s (b) 1500 m/s (c) 340 m/s

1 micron = ___ mm

What is potential energy ? State its unit.

Which is the only force acting on an object during free fall

2 bodies having masses 2kg and 4kg respectively are seperated by 2m. Where a body of mass 1kg should be placed so that the gravitational force on this body due to bodies A and B is zero?

Pick the odd one out giving reason(a) Eardrum, oval window, multiple refraction, auditory nerves(b) Sound, water, vacuum, Steel, air(c) Amplitude of vibration, quantity of vibrating air, frequency, decibel(d) Hearing loss, high blood pressure, physical pain, noise

All definition of laws of motion

Two car,ferrari and BMW are having a competition for highest speed. Ferrari can accelerate with 20m/s² till 5 seconds and BMW can accelerate with 17m/s² up to 6 seconds.Who wins the race?

How do we measured super conductor and what is the formula of it and where is found the super conductor

How many vibration will a running fork of frequency 280hz will complete during the time sound travel formed in air by 20m. Take speed of sound in air as 340m/s

Which of the following statement is false? 1. If speed is zero , it's velocity also must be zero. 2. if velocity is zero , then it's speed need not be zero 3. If speed is constant , then it's speed must be constant . 4. If velocity is constant , then it's speed must be constant.

The given figure shows a bucket being whirled around in a vertical circle with a help of a string with very high constant speed. What is a correlation between above action and the motion of the moon around the earth?

A body of mass 5 kg is moving with velocity 2ms−1. Calculate its linear momentum.

A particle is continously moving on a circular path. Which of the following could be the distance and displacement of the particle between a point and its diagonally opposite point?

The displacement-time equation is:

Give two reasons why water is not a suitable barometric liquid.

The options show a v-shaped object placed in different orientations on a surface. In which orientation does the object exert maximum pressure?

A convex lens of focal length 10 cm is placed at a distance of 12 cm from a wall. How far from the lens should an object be placed so as to form its real image on the wall?