13232 + Interview Questions in Physics

1.	The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?
Answer» The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?

Discussion

2.	Convert 1 light year into km
Answer» Convert 1 light year into km

Discussion

3.	A wire of uniform area of cross-section carries a current of 0.5 A. How many electrons would pass through this cross-section in 20 seconds?
Answer» A wire of uniform area of cross-section carries a current of $0.5 A$ . How many electrons would pass through this cross-section in $20 s e c o n d s$ ?

Discussion

4.	The wavelength of sound is 1.7×10−2m .Calculate the frequency of sound.(velocity of sound is v=343.3 m/s)
Answer» The wavelength of sound is $1.7 \times 10^{- 2} m$ .Calculate the frequency of sound.(velocity of sound is $v = 343.3$ m/s)

Discussion

5.	A child completes one round of diameter 50m in 20s what will be the distance covdrec and displacement at the end of 1 min 10 sec
Answer» A child completes one round of diameter 50m in 20s what will be the distance covdrec and displacement at the end of 1 min 10 sec

Discussion

6.	The break applies to a car produce an acceleration of 6ms² in the opposite direction of motion, if car takes 2s to stop after the application of break calalculate the distance it travales during this time
Answer» The break applies to a car produce an acceleration of 6ms² in the opposite direction of motion, if car takes 2s to stop after the application of break calalculate the distance it travales during this time

Discussion

7.	Explain why, snow shoes stop you from sinking into soft snow.
Answer» Explain why, snow shoes stop you from sinking into soft snow.

Discussion

8.	The time period of oscillation of a simple pendulum is given by the relation:
Answer» The time period of oscillation of a simple pendulum is given by the relation:

Discussion

9.	what happens when brakes are applied to a car moving with a constant velocity?
Answer» what happens when brakes are applied to a car moving with a constant velocity?

Discussion

10.	Question 10 The given graph shows the displacement versus time relation for a disturbance travelling with velocity of 1500 ms−1 . Calculate the wavelength of the disturbance
Answer» Question 10 The given graph shows the displacement versus time relation for a disturbance travelling with velocity of $1500 m s^{- 1}$ . Calculate the wavelength of the disturbance

Discussion

11.	A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part on to the table is
Answer» A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part on to the table is

Discussion

12.	A body of mass 5 kg is thrown vertically upwards from ground with a velocity of 20 ms−1. What will be its momentum just before hitting the ground? Assume upward direction as positive.
Answer» A body of mass $5 k g$ is thrown vertically upwards from ground with a velocity of $20 m s^{- 1}$ . What will be its momentum just before hitting the ground? Assume upward direction as positive.

Discussion

13.	An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?
Answer» An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?

Discussion

14.	Steam at 100oC is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15oC till the temperature of the calorimeter and its contents rises to 80oC. The mass of the steam condensed in kg is latent heat of vaporization of water = 540 cal kg−1, specific heat capacity of water = 103 cal kg−1∘C−1
Answer» Steam at $100^{o} C$ is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at $15^{o} C$ till the temperature of the calorimeter and its contents rises to $80^{o} C .$ The mass of the steam condensed in kg is latent heat of vaporization of water = $540 c a l k g^{-} 1$ , specific heat capacity of water = $10^{3} c a l k g^{-} 1^{\circ} C^{-} 1$

14.

Steam at 100oC is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15oC till the temperature of the calorimeter and its contents rises to 80oC. The mass of the steam condensed in kg is latent heat of vaporization of water = 540 cal kg−1, specific heat capacity of water = 103 cal kg−1∘C−1

Answer»

Steam at $100^{o} C$ is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at $15^{o} C$ till the temperature of the calorimeter and its contents rises to $80^{o} C .$ The mass of the steam condensed in kg is

latent heat of vaporization of water = $540 c a l k g^{-} 1$ , specific heat capacity of water = $10^{3} c a l k g^{-} 1^{\circ} C^{-} 1$

Discussion

15.	Give an example of the motion of a body moving with a constant speed, but with a variable velocity.Draw a diagram to represent such a motion.
Answer» Give an example of the motion of a body moving with a constant speed, but with a variable velocity.Draw a diagram to represent such a motion.

Discussion

16.	State two differences between the light and sound waves.
Answer» State two differences between the light and sound waves.

Discussion

17.	In the F.P.S system, the unit of length is________.
Answer» In the F.P.S system, the unit of length is________.

Discussion

18.	Read the sentence and fill in the blank with the correct option. Isabel hurled a stone at the stray dog. A stone _________ at the stray dog by Isabel.
Answer» Read the sentence and fill in the blank with the correct option. Isabel hurled a stone at the stray dog. A stone _________ at the stray dog by Isabel.

18.

Read the sentence and fill in the blank with the correct option. Isabel hurled a stone at the stray dog. A stone _________ at the stray dog by Isabel.

Answer»

Read the sentence and fill in the blank with the correct option.

Isabel hurled a stone at the stray dog.

A stone _________ at the stray dog by Isabel.

Discussion

19.	Electrical signals generated in the ear are sent to the brain via which nerve?
Answer» Electrical signals generated in the ear are sent to the brain via which nerve?

Discussion

20.	Which part of the ear converts the vibrations into electrical signals?
Answer» Which part of the ear converts the vibrations into electrical signals?

Discussion

21.	Does work depends on velocity ? why or why not ?
Answer» Does work depends on velocity ? why or why not ?

Discussion

22.	Mass of an object is 7.2 kg .Is it weight less than or more than 7.2 kg?
Answer» Mass of an object is 7.2 kg .Is it weight less than or more than 7.2 kg?

Discussion

23.	The centripetal force on a satellite revolving around the earth is F. The gravitational force of the earth is also F. The net force on the satellite is
Answer» The centripetal force on a satellite revolving around the earth is F. The gravitational force of the earth is also F. The net force on the satellite is

Discussion

24.	A cart of weight 10 N is pulled 1.2 m up a ramp by an applied force of magnitude 5.0 N (parallel to the ramp), raising the cart 0.50 m above its initial level. Calculate percentage efficiency of the work?
Answer» A cart of weight $10 N$ is pulled $1.2 m$ up a ramp by an applied force of magnitude $5.0 N$ (parallel to the ramp), raising the cart $0.50 m$ above its initial level. Calculate percentage efficiency of the work?

Discussion

25.	Use the following information to answer the next question. At what temperature will the liquids have the same density?
Answer» Use the following information to answer the next question. At what temperature will the liquids have the same density?

25.

Use the following information to answer the next question. At what temperature will the liquids have the same density?

Answer»

Use the following information to answer the next question.

At what temperature will the liquids have the same density?

Discussion

26.	Among which of the following situations the object(s) is/are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off the ground. 3. Flying in a aircraft. 4. A car accelerating at 9.8 ms−2in the road.
Answer» Among which of the following situations the object(s) is/are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off the ground. 3. Flying in a aircraft. 4. A car accelerating at $9.8 m s^{- 2}$ in the road.

26.

Among which of the following situations the object(s) is/are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off the ground. 3. Flying in a aircraft. 4. A car accelerating at 9.8 ms−2in the road.

Answer»

Among which of the following situations the object(s) is/are in free fall?

1. An object dropped from a certain height.
2. An object is thrown upward or a person jumping off the ground.
3. Flying in a aircraft.
4. A car accelerating at $9.8 m s^{- 2}$ in the road.

Discussion

27.	Look at the figure given below and answer the question based on that. Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings What happens to a compass at a particular point near the copper wire if the resistance of the circuit is increased?
Answer» Look at the figure given below and answer the question based on that. Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings What happens to a compass at a particular point near the copper wire if the resistance of the circuit is increased?

27.

Look at the figure given below and answer the question based on that. Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings What happens to a compass at a particular point near the copper wire if the resistance of the circuit is increased?

Answer»

Look at the figure given below and answer the question based on that.

Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings

What happens to a compass at a particular point near the copper wire if the resistance of the circuit is increased?

Discussion

28.	Which of the following materials is the most suitable for making the core of an electromagnet?
Answer» Which of the following materials is the most suitable for making the core of an electromagnet?

Discussion

29.	How much momentum will a dumbbell of mass 10 kg transfer to the floor if it falls from a height of 80 cm (assume that the dumbbell stops after hitting the ground)? (Take g = 10 ms−2 )
Answer» How much momentum will a dumbbell of mass 10 kg transfer to the floor if it falls from a height of 80 cm (assume that the dumbbell stops after hitting the ground)? (Take $g = 10 m s^{- 2}$ )

Discussion

30.	Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas
Answer» Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas

30.

Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas

Answer»

Which of the following cannot transmit sound?

Water, Vacuum, Aluminium, Oxygen gas

Discussion

31.	Which of the following emissions change the atomic number and mass number?
Answer» Which of the following emissions change the atomic number and mass number?

Discussion

32.	A stone dropped from the top of a tower of height 300 m splashes into a pond of water at its base. When will the sound of the splash be heard at the top ? ( Take velocity of sound = 340 ms−1 and acceleration due to gravity, g=9.8 ms−2)
Answer» A stone dropped from the top of a tower of height $300 m$ splashes into a pond of water at its base. When will the sound of the splash be heard at the top ? ( Take velocity of sound = $340 m s^{- 1}$ and acceleration due to gravity, $g = 9.8 m s^{- 2}$ )

Discussion

33.	A boy hits a football with a large force, the action force acts on the football and same magnitude reaction force acts on the boy. What can be inferred by above statement?
Answer» A boy hits a football with a large force, the action force acts on the football and same magnitude reaction force acts on the boy. What can be inferred by above statement?

Discussion

34.	Question 3 A train starting from a railway station and moving with uniform acceleration attains a speed 40 kmph in 10 minutes. Find its acceleration.
Answer» Question 3 A train starting from a railway station and moving with uniform acceleration attains a speed 40 kmph in 10 minutes. Find its acceleration.

Discussion

35.	From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically) with the same speed. If vA and vB are their respective velocities on reaching the ground then,
Answer» From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically) with the same speed. If $v_{A}$ and $v_{B}$ are their respective velocities on reaching the ground then,

Discussion

36.	A sound is travelling in air at a speed of 343 ms−1. The wavelength of the sound wave is 0.1 cm. Find the frequency of the sound wave.
Answer» A sound is travelling in air at a speed of $343 m s^{- 1}$ . The wavelength of the sound wave is $0.1 c m$ . Find the frequency of the sound wave.

Discussion

37.	The force acting on a particle varies as in the figure. Find the work done by the force as the particle moves from x =0 m to x = 10.0 m.
Answer» The force acting on a particle varies as in the figure. Find the work done by the force as the particle moves from x =0 m to x = 10.0 m.

37.

The force acting on a particle varies as in the figure. Find the work done by the force as the particle moves from x =0 m to x = 10.0 m.

Answer»

The force acting on a particle varies as in the figure. Find the work done by the force as the particle moves from x =0 m to x = 10.0 m.

Discussion

38.	1. Write the three equation of motion for freely falling bodies and write the value of g. 2. A cricket ball is dropped from a height of 20 metres. [5 MARKS] (a) Calculate the speed of the ball when it hits the ground (b) Calculate the time it takes to fall through this height.
Answer» 1. Write the three equation of motion for freely falling bodies and write the value of g. 2. A cricket ball is dropped from a height of 20 metres. [5 MARKS] (a) Calculate the speed of the ball when it hits the ground (b) Calculate the time it takes to fall through this height.

Discussion

39.	A body of weight 1000 N sinks in water. The weight of liquid overflowed is 250 N. The weight of the body in water is
Answer» A body of weight 1000 N sinks in water. The weight of liquid overflowed is 250 N. The weight of the body in water is

Discussion

40.	A body which is intially at rest covers a distance of 6 m in 4 seconds. Calculate: (a) The acceleration (b) The final velocity [3 MARKS]
Answer» A body which is intially at rest covers a distance of 6 m in 4 seconds. Calculate: (a) The acceleration (b) The final velocity [3 MARKS]

Discussion

41.	A sphere rolls down on an inclined plane of inclination θ. What is the acceleration as the sphere reaches bottom
Answer» A sphere rolls down on an inclined plane of inclination $θ$ . What is the acceleration as the sphere reaches bottom

Discussion

42.	Will an elephant and ant fall with the same velocity in vacuum?
Answer» Will an elephant and ant fall with the same velocity in vacuum?

Discussion

43.	Name the force which makes heavy objects appear light when immersed in a liquid.
Answer» Name the force which makes heavy objects appear light when immersed in a liquid.

Discussion

44.	Displacement is the ________ path covered by the object from the initial point of reference in a specific direction
Answer» Displacement is the ________ path covered by the object from the initial point of reference in a specific direction

Discussion

45.	Food chain begins with : (a) respiration (b) photosynthesis (c) decomposition (d) decay.
Answer» Food chain begins with : (a) respiration (b) photosynthesis (c) decomposition (d) decay.

45.

Food chain begins with : (a) respiration (b) photosynthesis (c) decomposition (d) decay.

Answer»

Food chain begins with :

(a) respiration (b) photosynthesis

(c) decomposition (d) decay.

Discussion

46.	Given the mass of the moon = 7.35 × 1022 kg and the radius of the moon = 1740 km. Calculate the acceleration experienced by a particle on the surface of the moon due to the gravitational force of the moon. Find the ratio of this acceleration to that experienced by the same particle on the surface of the earth.
Answer» Given the mass of the moon = 7.35 × $10^{22}$ kg and the radius of the moon = 1740 km. Calculate the acceleration experienced by a particle on the surface of the moon due to the gravitational force of the moon. Find the ratio of this acceleration to that experienced by the same particle on the surface of the earth.

Discussion

47.	A car of mass 480 kg moving at a speed of 54 km h-1 is stopped by applying brakes in 10s. Calculate the force applied by the brakes.
Answer» A car of mass 480 kg moving at a speed of 54 km h-1 is stopped by applying brakes in 10s. Calculate the force applied by the brakes.

Discussion

48.	Define the term thrust. State its S.I. unit.
Answer» Define the term thrust. State its S.I. unit.

Discussion

49.	In the British system of units, what is the unit of length?
Answer» In the British system of units, what is the unit of length?

Discussion

50.	What is the difference between flat and round bottom flask
Answer» What is the difference between flat and round bottom flask

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?

Convert 1 light year into km

A wire of uniform area of cross-section carries a current of 0.5 A. How many electrons would pass through this cross-section in 20 seconds?

The wavelength of sound is 1.7×10−2m .Calculate the frequency of sound.(velocity of sound is v=343.3 m/s)

A child completes one round of diameter 50m in 20s what will be the distance covdrec and displacement at the end of 1 min 10 sec

The break applies to a car produce an acceleration of 6ms² in the opposite direction of motion, if car takes 2s to stop after the application of break calalculate the distance it travales during this time

Explain why, snow shoes stop you from sinking into soft snow.

The time period of oscillation of a simple pendulum is given by the relation:

what happens when brakes are applied to a car moving with a constant velocity?

Question 10 The given graph shows the displacement versus time relation for a disturbance travelling with velocity of 1500 ms−1 . Calculate the wavelength of the disturbance

A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part on to the table is

A body of mass 5 kg is thrown vertically upwards from ground with a velocity of 20 ms−1. What will be its momentum just before hitting the ground? Assume upward direction as positive.

An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?

Give an example of the motion of a body moving with a constant speed, but with a variable velocity.Draw a diagram to represent such a motion.

State two differences between the light and sound waves.

In the F.P.S system, the unit of length is________.

Read the sentence and fill in the blank with the correct option. Isabel hurled a stone at the stray dog. A stone _________ at the stray dog by Isabel.

Electrical signals generated in the ear are sent to the brain via which nerve?

Which part of the ear converts the vibrations into electrical signals?

Does work depends on velocity ? why or why not ?

Mass of an object is 7.2 kg .Is it weight less than or more than 7.2 kg?

The centripetal force on a satellite revolving around the earth is F. The gravitational force of the earth is also F. The net force on the satellite is

A cart of weight 10 N is pulled 1.2 m up a ramp by an applied force of magnitude 5.0 N (parallel to the ramp), raising the cart 0.50 m above its initial level. Calculate percentage efficiency of the work?

Use the following information to answer the next question. At what temperature will the liquids have the same density?

Among which of the following situations the object(s) is/are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off the ground. 3. Flying in a aircraft. 4. A car accelerating at 9.8 ms−2in the road.

Which of the following materials is the most suitable for making the core of an electromagnet?

How much momentum will a dumbbell of mass 10 kg transfer to the floor if it falls from a height of 80 cm (assume that the dumbbell stops after hitting the ground)? (Take g = 10 ms−2 )

Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas

Which of the following emissions change the atomic number and mass number?

A stone dropped from the top of a tower of height 300 m splashes into a pond of water at its base. When will the sound of the splash be heard at the top ? ( Take velocity of sound = 340 ms−1 and acceleration due to gravity, g=9.8 ms−2)

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

Question 3 A train starting from a railway station and moving with uniform acceleration attains a speed 40 kmph in 10 minutes. Find its acceleration.

From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically) with the same speed. If vA and vB are their respective velocities on reaching the ground then,

A sound is travelling in air at a speed of 343 ms−1. The wavelength of the sound wave is 0.1 cm. Find the frequency of the sound wave.

The force acting on a particle varies as in the figure. Find the work done by the force as the particle moves from x =0 m to x = 10.0 m.

1. Write the three equation of motion for freely falling bodies and write the value of g. 2. A cricket ball is dropped from a height of 20 metres. [5 MARKS] (a) Calculate the speed of the ball when it hits the ground (b) Calculate the time it takes to fall through this height.

A body of weight 1000 N sinks in water. The weight of liquid overflowed is 250 N. The weight of the body in water is

A body which is intially at rest covers a distance of 6 m in 4 seconds. Calculate: (a) The acceleration (b) The final velocity [3 MARKS]

A sphere rolls down on an inclined plane of inclination θ. What is the acceleration as the sphere reaches bottom

Will an elephant and ant fall with the same velocity in vacuum?

Name the force which makes heavy objects appear light when immersed in a liquid.

Displacement is the ________ path covered by the object from the initial point of reference in a specific direction

Food chain begins with : (a) respiration (b) photosynthesis (c) decomposition (d) decay.

A car of mass 480 kg moving at a speed of 54 km h-1 is stopped by applying brakes in 10s. Calculate the force applied by the brakes.

Define the term thrust. State its S.I. unit.

In the British system of units, what is the unit of length?

What is the difference between flat and round bottom flask