13232 + Interview Questions in Physics

1.	The motion of a satellite in circular orbit is an example of:
Answer» The motion of a satellite in circular orbit is an example of:

Discussion

2.	sound wave has frequency 2Hz and wave length40cm .how long it taketo treval1.6 km
Answer» sound wave has frequency 2Hz and wave length40cm .how long it taketo treval1.6 km

Discussion

3.	Identify the electrodes in the given diagram of an electric cell:
Answer» Identify the electrodes in the given diagram of an electric cell:

Discussion

4.	What resistance must be connected to a 15 Ω resistance to provide an effective resistance of 6 Ω?
Answer» What resistance must be connected to a $15 Ω$ resistance to provide an effective resistance of $6 Ω$ ?

Discussion

5.	Question 1 Why are the ceilings of concert halls curved?
Answer» Question 1 Why are the ceilings of concert halls curved?

Discussion

6.	For a body starting from rest and moving with uniform acceleration, the ratio of the distances covered for 1s, 2s, 3s, ..... is
Answer» For a body starting from rest and moving with uniform acceleration, the ratio of the distances covered for 1s, 2s, 3s, ..... is

Discussion

7.	The number of neutrons in Sodium and Magnesium nuclides are same and hence we call them as ______________
Answer» The number of neutrons in Sodium and Magnesium nuclides are same and hence we call them as ______________

Discussion

8.	Two conductors A and B are joined by a copper wire. If A is positively charged and B is uncharged, in which direction will the electrons flow?
Answer» Two conductors A and B are joined by a copper wire. If A is positively charged and B is uncharged, in which direction will the electrons flow?

Discussion

9.	As the position of an object changes, the focal length of eye lens also gets adjusted by changing the curvature of the lens with the help of
Answer» As the position of an object changes, the focal length of eye lens also gets adjusted by changing the curvature of the lens with the help of

Discussion

10.	The area of cross section of the wider tube shown in figure is 900 cm2. If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes.
Answer» The area of cross section of the wider tube shown in figure is 900 cm². If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes.

10.

The area of cross section of the wider tube shown in figure is 900 cm2. If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes.

Answer»

The area of cross section of the wider tube shown in figure is 900 cm². If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes.

Discussion

11.	A biconvex thin lens is prepared from glass (μ=1.5), the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Where should an object be placed before this lens so that the image is formed on the object itself?
Answer» A biconvex thin lens is prepared from glass $(μ = 1.5)$ , the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Where should an object be placed before this lens so that the image is formed on the object itself?

Discussion

12.	Explain the law of conservation of energy. [3 MARKS]
Answer» Explain the law of conservation of energy. [3 MARKS]

Discussion

13.	A motorcyclist starts from rest and reaches a speed of 6 m/s after traveling with uniform acceleration for 3s. What is his acceleration?
Answer» A motorcyclist starts from rest and reaches a speed of 6 m/s after traveling with uniform acceleration for 3s. What is his acceleration?

Discussion

14.	An earthquake generally produces which type of sound wave before the main shock wave begins?
Answer» An earthquake generally produces which type of sound wave before the main shock wave begins?

Discussion

15.	The gravitational force between two objects is F. If both of their masses are halved without altering the distance between them, the new gravitational force between them would be:
Answer» The gravitational force between two objects is $F$ . If both of their masses are halved without altering the distance between them, the new gravitational force between them would be:

Discussion

16.	What are equal and opposite forces acting on a body which do not change its state of rest or uniform motion called?
Answer» What are equal and opposite forces acting on a body which do not change its state of rest or uniform motion called?

Discussion

17.	A piece of wood having dimensions 1 m by 2 m by 3 m and 2 kg mass. What is the density of wood? Would the wood float in water? (dwater=1000kgm3)
Answer» A piece of wood having dimensions 1 m by 2 m by 3 m and 2 kg mass. What is the density of wood? Would the wood float in water? ( $d_{w a t e r}$ $= 1000 \frac{k g}{m^{3}})$

Discussion

18.	Explain work done when a body is moved horizontally along the friction less surface. [2 MARKS]
Answer» Explain work done when a body is moved horizontally along the friction less surface. [2 MARKS]

Discussion

19.	In the mirror shown, the reflected ray will ___.
Answer» In the mirror shown, the reflected ray will ___.

19.

In the mirror shown, the reflected ray will ___.

Answer»

In the mirror shown, the reflected ray will ___.

Discussion

20.	The motion of an object moving at uniform acceleration shown in the figure given below can be described with the help of which of the following equations ? \(
Answer» The motion of an object moving at uniform acceleration shown in the figure given below can be described with the help of which of the following equations ? \(

Discussion

21.	A cube of mass 1kg with each side of 1cm is lying on the table. find the pressure exerted by the block on the table. Take g = 10 m/s2.
Answer» A cube of mass 1kg with each side of 1cm is lying on the table. find the pressure exerted by the block on the table. Take g = 10 $m / s^{2}$ .

Discussion

22.	An object travels around a circle of radius 6 m with speed 3π ms−1. Find the distance and displacement after 3 s.
Answer» An object travels around a circle of radius $6 m$ with speed $3 π m s^{- 1}$ . Find the distance and displacement after $3 s$ .

Discussion

23.	A body moves in a vertical semicircle of radius r from the lowest point to highest point. What is the amount of work done? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be g ms−2)
Answer» A body moves in a vertical semicircle of radius r from the lowest point to highest point. What is the amount of work done? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be $g m s^{- 2}$ )

Discussion

24.	Observe the given distance-time graph. Identify the respective speeds of the body when it moves from O (Origin) to A and B to C.
Answer» Observe the given distance-time graph. Identify the respective speeds of the body when it moves from $O$ (Origin) to $A$ and $B$ to $C$ .

Discussion

25.	A lift is descending with a constant velocity 'v'. A man in the lift drops a coin. The coin experiences an acceleration towards the floor equal to:
Answer» A lift is descending with a constant velocity 'v'. A man in the lift drops a coin. The coin experiences an acceleration towards the floor equal to:

Discussion

26.	Describe the energy flow in an ecosystem.
Answer» Describe the energy flow in an ecosystem.

Discussion

27.	Newton's second law of motion? with example!
Answer» Newton's second law of motion? with example!

Discussion

28.	A car travels first 30 km with a uniform speed of 60 km h−1 and then next 30 km with a uniform speed of 40 km h−1. Calculate: (i) the total time of journey, (ii) the average speed of the car.
Answer» A car travels first 30 km with a uniform speed of 60 km $h^{- 1}$ and then next 30 km with a uniform speed of 40 km $h^{- 1}$ . Calculate: (i) the total time of journey, (ii) the average speed of the car.

28.

A car travels first 30 km with a uniform speed of 60 km h−1 and then next 30 km with a uniform speed of 40 km h−1. Calculate: (i) the total time of journey, (ii) the average speed of the car.

Answer»

A car travels first 30 km with a uniform speed of 60 km $h^{- 1}$ and then next 30 km with a uniform speed of 40 km $h^{- 1}$ . Calculate:

(i) the total time of journey,
(ii) the average speed of the car.

Discussion

29.	An object weighs 500 grams in air. This object is then fully immersed in water. State whether it will weigh less in water or more in water. Give reason for your answer.
Answer» An object weighs 500 grams in air. This object is then fully immersed in water. State whether it will weigh less in water or more in water. Give reason for your answer.

Discussion

30.	A block A,weighing 100 N,is pulled up a slope of length 5 m by means of a constant force F(=100 N) as illustrated in the figure. (a) What is the work done by the force F in moving the block A,5 m along the slope? (b) What is the increase in potential energy of the block A? (c) Account for the difference in the work done by the force and the increase in potential energy of the block.
Answer» A block A,weighing 100 N,is pulled up a slope of length 5 m by means of a constant force F(=100 N) as illustrated in the figure. (a) What is the work done by the force F in moving the block A,5 m along the slope? (b) What is the increase in potential energy of the block A? (c) Account for the difference in the work done by the force and the increase in potential energy of the block.

30.

A block A,weighing 100 N,is pulled up a slope of length 5 m by means of a constant force F(=100 N) as illustrated in the figure. (a) What is the work done by the force F in moving the block A,5 m along the slope? (b) What is the increase in potential energy of the block A? (c) Account for the difference in the work done by the force and the increase in potential energy of the block.

Answer»

A block A,weighing 100 N,is pulled up a slope of length 5 m by means of a constant force F(=100 N) as illustrated in the figure.

(a) What is the work done by the force F in moving the block A,5 m along the slope?

(b) What is the increase in potential energy of the block A?

(c) Account for the difference in the work done by the force and the increase in potential energy of the block.

Discussion

31.	Consider the following statements: Statement 1: No sound can be heard on the surface of the moon. Statement 2: Temperature of the surface of the Moon is very high and hence sound waves cannot be produced. Choose the correct options.
Answer» Consider the following statements: Statement 1: No sound can be heard on the surface of the moon. Statement 2: Temperature of the surface of the Moon is very high and hence sound waves cannot be produced. Choose the correct options.

Discussion

32.	What is the momentum of a 6 kg ball bowling with a velocity of 2.2 metre per second square
Answer» What is the momentum of a 6 kg ball bowling with a velocity of 2.2 metre per second square

Discussion

33.	Question 40 Why does moon have very cold and very hot temperature variations e.g., from -190∘C to 110∘C even though it is at the same distance from the sun as the earth is?
Answer» Question 40 Why does moon have very cold and very hot temperature variations e.g., from - $190^{\circ}$ C to $110^{\circ}$ C even though it is at the same distance from the sun as the earth is?

Discussion

34.	A block of wood weigh 4 N in air and 3N when immersed in a liquid. Find out the upthrust acting on it.
Answer» A block of wood weigh 4 N in air and 3N when immersed in a liquid. Find out the upthrust acting on it.

Discussion

35.	The lowest pitch detectable as sound by an average human ear corresponds to 20hz and the highest to 20000hz .what is the wavelength of each in air? Take the velocity 330 ms /s
Answer» The lowest pitch detectable as sound by an average human ear corresponds to 20hz and the highest to 20000hz .what is the wavelength of each in air? Take the velocity 330 ms /s

Discussion

36.	Law of inertia is also ___________.
Answer» Law of inertia is also ___________.

Discussion

37.	E=mc^2 or, m=E/c^2 KE=1/2mv^2 or, m=2KE/v^2 2KE/v^2=E/c^2 When v=c then 2KE=E So, can we say that the kinetic energy of a body is half of the energy when it travels at the speed of light?
Answer» E=mc^2 or, m=E/c^2 KE=1/2mv^2 or, m=2KE/v^2 2KE/v^2=E/c^2 When v=c then 2KE=E So, can we say that the kinetic energy of a body is half of the energy when it travels at the speed of light?

Discussion

38.	On Akashi’s birthday, her father gifted her two sets of balloons. She was very happy while she was holding them in her hand and dancing around. When she finally let go off them, the first set of balloon flew up to the ceiling of the house while the second set of balloon simply fell onto the floor. Why was such a difference in the behavior of the two sets of balloons observed?
Answer» On Akashi’s birthday, her father gifted her two sets of balloons. She was very happy while she was holding them in her hand and dancing around. When she finally let go off them, the first set of balloon flew up to the ceiling of the house while the second set of balloon simply fell onto the floor. Why was such a difference in the behavior of the two sets of balloons observed?

38.

On Akashi’s birthday, her father gifted her two sets of balloons. She was very happy while she was holding them in her hand and dancing around. When she finally let go off them, the first set of balloon flew up to the ceiling of the house while the second set of balloon simply fell onto the floor. Why was such a difference in the behavior of the two sets of balloons observed?

Answer»

On Akashi’s birthday, her father gifted her two sets of balloons. She was very happy while she was holding them in her hand and dancing around. When she finally let go off them, the first set of balloon flew up to the ceiling of the house while the second set of balloon simply fell onto the floor. Why was such a difference in the behavior of the two sets of balloons observed?

Discussion

39.	What are all difference between motion and speed
Answer» What are all difference between motion and speed

Discussion

40.	Definition of motion? Definition of displacement?
Answer» Definition of motion? Definition of displacement?

40.

Definition of motion? Definition of displacement?

Answer»

Definition of motion?

Definition of displacement?

Discussion

41.	Derive unit of acceleration.
Answer» Derive unit of acceleration.

Discussion

42.	A 100 kg wooden slab has dimensions 20 cm × 10 cm × 20 cm is placed on a table. The pressure exerted by the wooden slab on the table of dimensions 20 cm × 10 cm is [Take g = 10ms-2]
Answer» A 100 kg wooden slab has dimensions 20 cm × 10 cm × 20 cm is placed on a table. The pressure exerted by the wooden slab on the table of dimensions 20 cm × 10 cm is [Take g = 10ms^-2]

Discussion

43.	Which of the following is not a form of fixed capital?
Answer» Which of the following is not a form of fixed capital?

Discussion

44.	A boy hits the football with a large force, the action force acts on the football and the reaction force of same magnitude acts on the boy. What can be inferred from the given statement?
Answer» A boy hits the football with a large force, the action force acts on the football and the reaction force of same magnitude acts on the boy. What can be inferred from the given statement?

Discussion

45.	Is gravitational force a scalar or vector quantity
Answer» Is gravitational force a scalar or vector quantity

Discussion

46.	Explain the second law of motion.
Answer» Explain the second law of motion.

Discussion

47.	The slope of the distance-time graph gives us
Answer» The slope of the distance-time graph gives us

Discussion

48.	Why is it difficult to hold a school bag having a strap made up of a thin and strong string?
Answer» Why is it difficult to hold a school bag having a strap made up of a thin and strong string?

Discussion

49.	In which medium sound travels faster : air or hydrogen ?
Answer» In which medium sound travels faster : air or hydrogen ?

Discussion

50.	We drive a distance of 1 km at 16 km / hour. Then we drive and additional distance of 1 km at 32 km / hour. What is our average speed?
Answer» We drive a distance of 1 km at 16 km / hour. Then we drive and additional distance of 1 km at 32 km / hour. What is our average speed?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The motion of a satellite in circular orbit is an example of:

sound wave has frequency 2Hz and wave length40cm .how long it taketo treval1.6 km

Identify the electrodes in the given diagram of an electric cell:

What resistance must be connected to a 15 Ω resistance to provide an effective resistance of 6 Ω?

Question 1 Why are the ceilings of concert halls curved?

For a body starting from rest and moving with uniform acceleration, the ratio of the distances covered for 1s, 2s, 3s, ..... is

The number of neutrons in Sodium and Magnesium nuclides are same and hence we call them as ______________

Two conductors A and B are joined by a copper wire. If A is positively charged and B is uncharged, in which direction will the electrons flow?

As the position of an object changes, the focal length of eye lens also gets adjusted by changing the curvature of the lens with the help of

The area of cross section of the wider tube shown in figure is 900 cm2. If the boy standing on the piston weighs 45 kg, find the difference in the levels of water in the two tubes.

A biconvex thin lens is prepared from glass (μ=1.5), the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Where should an object be placed before this lens so that the image is formed on the object itself?

Explain the law of conservation of energy. [3 MARKS]

A motorcyclist starts from rest and reaches a speed of 6 m/s after traveling with uniform acceleration for 3s. What is his acceleration?

An earthquake generally produces which type of sound wave before the main shock wave begins?

The gravitational force between two objects is F. If both of their masses are halved without altering the distance between them, the new gravitational force between them would be:

What are equal and opposite forces acting on a body which do not change its state of rest or uniform motion called?

A piece of wood having dimensions 1 m by 2 m by 3 m and 2 kg mass. What is the density of wood? Would the wood float in water? (dwater=1000kgm3)

Explain work done when a body is moved horizontally along the friction less surface. [2 MARKS]

In the mirror shown, the reflected ray will ___.

The motion of an object moving at uniform acceleration shown in the figure given below can be described with the help of which of the following equations ? \(

A cube of mass 1kg with each side of 1cm is lying on the table. find the pressure exerted by the block on the table. Take g = 10 m/s2.

An object travels around a circle of radius 6 m with speed 3π ms−1. Find the distance and displacement after 3 s.

A body moves in a vertical semicircle of radius r from the lowest point to highest point. What is the amount of work done? (Assume mass of the body to be 'm' kg and acceleration due to gravity to be g ms−2)

Observe the given distance-time graph. Identify the respective speeds of the body when it moves from O (Origin) to A and B to C.

A lift is descending with a constant velocity 'v'. A man in the lift drops a coin. The coin experiences an acceleration towards the floor equal to:

Describe the energy flow in an ecosystem.

Newton's second law of motion? with example!

A car travels first 30 km with a uniform speed of 60 km h−1 and then next 30 km with a uniform speed of 40 km h−1. Calculate: (i) the total time of journey, (ii) the average speed of the car.

An object weighs 500 grams in air. This object is then fully immersed in water. State whether it will weigh less in water or more in water. Give reason for your answer.

Consider the following statements: Statement 1: No sound can be heard on the surface of the moon. Statement 2: Temperature of the surface of the Moon is very high and hence sound waves cannot be produced. Choose the correct options.

What is the momentum of a 6 kg ball bowling with a velocity of 2.2 metre per second square

Question 40 Why does moon have very cold and very hot temperature variations e.g., from -190∘C to 110∘C even though it is at the same distance from the sun as the earth is?

A block of wood weigh 4 N in air and 3N when immersed in a liquid. Find out the upthrust acting on it.

The lowest pitch detectable as sound by an average human ear corresponds to 20hz and the highest to 20000hz .what is the wavelength of each in air? Take the velocity 330 ms /s

Law of inertia is also ___________.

E=mc^2 or, m=E/c^2 KE=1/2mv^2 or, m=2KE/v^2 2KE/v^2=E/c^2 When v=c then 2KE=E So, can we say that the kinetic energy of a body is half of the energy when it travels at the speed of light?

What are all difference between motion and speed

Definition of motion? Definition of displacement?

Derive unit of acceleration.

A 100 kg wooden slab has dimensions 20 cm × 10 cm × 20 cm is placed on a table. The pressure exerted by the wooden slab on the table of dimensions 20 cm × 10 cm is [Take g = 10ms-2]

Which of the following is not a form of fixed capital?

A boy hits the football with a large force, the action force acts on the football and the reaction force of same magnitude acts on the boy. What can be inferred from the given statement?

Is gravitational force a scalar or vector quantity

Explain the second law of motion.

The slope of the distance-time graph gives us

Why is it difficult to hold a school bag having a strap made up of a thin and strong string?

In which medium sound travels faster : air or hydrogen ?

We drive a distance of 1 km at 16 km / hour. Then we drive and additional distance of 1 km at 32 km / hour. What is our average speed?