13232 + Interview Questions in Physics Page 165 InterviewSolution

8201.	An object starts from rest and travels 20m in the first 2s and 160m in the next 4s. Find its velocity at 7s after the start.
Answer» An object starts from rest and travels 20m in the first 2s and 160m in the next 4s. Find its velocity at 7s after the start.

Discussion

8202.	if train a and train b goes in opposite direction of each other and interchange their place after crossing each other.find the speed of train b if the both train took 9 and 16 hours respectively and speed of train a is 10km/h
Answer» if train a and train b goes in opposite direction of each other and interchange their place after crossing each other.find the speed of train b if the both train took 9 and 16 hours respectively and speed of train a is 10km/h

Discussion

8203.	Is the motion of falling of coconut uniform or non uniform?
Answer» Is the motion of falling of coconut uniform or non uniform?

Discussion

8204.	A car is moving with a velocity of 40 m/s.The brakes are applied to retard it at a rate of 2m/s. What will be its velocity after 5 seconds of applying the brakes
Answer» A car is moving with a velocity of 40 m/s.The brakes are applied to retard it at a rate of 2m/s. What will be its velocity after 5 seconds of applying the brakes

Discussion

8205.	Differentiate between loudness and intensity
Answer» Differentiate between loudness and intensity

Discussion

8206.	A particle weigh 120N on earth surface. At what height above the earth surface will it's weight be 30N? (radius of earth=6400km)
Answer» A particle weigh 120N on earth surface. At what height above the earth surface will it's weight be 30N? (radius of earth=6400km)

Discussion

8207.	The mass of earth in terms of 'g' acceleration due to gravity and 'G' universal gravitational constant is:
Answer» The mass of earth in terms of 'g' acceleration due to gravity and 'G' universal gravitational constant is:

Discussion

8208.	An ammeter is connected in a circuit in
Answer» An ammeter is connected in a circuit in

Discussion

8209.	Which of the following actions are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off. 3. Flying in an aircraft. 4. A car accelerating at 9.8 ms−2 on the road.
Answer» Which of the following actions are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off. 3. Flying in an aircraft. 4. A car accelerating at 9.8 $m s^{- 2}$ on the road.

8209.

Which of the following actions are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off. 3. Flying in an aircraft. 4. A car accelerating at 9.8 ms−2 on the road.

Answer»

Which of the following actions are in free fall?

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

Discussion

8210.	Which of the following rods will expand more, on being heated to the same rise in temperature; the initial length of each being same.
Answer» Which of the following rods will expand more, on being heated to the same rise in temperature; the initial length of each being same.

Discussion

8211.	The SI unit of weight is
Answer» The SI unit of weight is

Discussion

8212.	The position verses time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object?
Answer» The position verses time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object?

8212.

The position verses time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object?

Answer»

The position verses time graph below represents the motion of an object.

Which one of the four graphs below best represents the velocity verses time graph for this object?

Discussion

8213.	In a freely falling body, the interchange of potential to kinetic energy takes place:
Answer» In a freely falling body, the interchange of potential to kinetic energy takes place:

Discussion

8214.	36 km/hr= ___ m/s
Answer» $36 k m / h r =$ ___ $m / s$

Discussion

8215.	Gravity is the weakest force.justify
Answer» Gravity is the weakest force.justify

Discussion

8216.	Arrange the speed of sound in gases Vg, solids Vs and liquids Vl in an ascending order.
Answer» Arrange the speed of sound in gases $V_{g}$ , solids $V_{s}$ and liquids $V_{l}$ in an ascending order.

Discussion

8217.	Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called the ___ .
Answer» Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called the ___ .

Discussion

8218.	What is mass?
Answer» What is mass?

Discussion

8219.	If 300 joule of work is required to be done to transfer 30 coulombs of charge, then the potential difference between two ends of battery is________.
Answer» If 300 joule of work is required to be done to transfer 30 coulombs of charge, then the potential difference between two ends of battery is________.

Discussion

8220.	A 500kg rocket is fired straight up from the earth, the engines provide 7500 newtons of thrust. Its acceleration is
Answer» A 500kg rocket is fired straight up from the earth, the engines provide 7500 newtons of thrust. Its acceleration is

Discussion

8221.	A car takes 20 minutes to cover a distance of 24 km. Find its speed in m/s.
Answer» A car takes 20 minutes to cover a distance of 24 km. Find its speed in m/s.

Discussion

8222.	Name two examples in which the mechanical energy of a system remains constant.
Answer» Name two examples in which the mechanical energy of a system remains constant.

Discussion

8223.	Power of a convex lens of focal length 50 cm is
Answer» Power of a convex lens of focal length $50 c m$ is

Discussion

8224.	A body of mass 2kg having a velocity of 2m/s is brought to rest within a distance of 2m. Find the force acting on the body?
Answer» A body of mass 2kg having a velocity of 2m/s is brought to rest within a distance of 2m. Find the force acting on the body?

Discussion

8225.	One way that you can recognize that a force is acting on an object:
Answer» One way that you can recognize that a force is acting on an object:

Discussion

8226.	A particle is moving along a circle of radius R such that it completes one revolution in 40 seconds. What will be the displacement after 2 minutes 20 seconds?
Answer» A particle is moving along a circle of radius R such that it completes one revolution in 40 seconds. What will be the displacement after 2 minutes 20 seconds?

Discussion

8227.	A body of mass 44 kg is moving at a velocity of 10 m/s is brought to rest in 10mins, the work done is:
Answer» A body of mass 44 kg is moving at a velocity of 10 m/s is brought to rest in 10mins, the work done is:

Discussion

8228.	A 10 kg iron dumbbell is dropped from a height of 80 cm onto a stone floor. If the dumbbell comes to rest after hitting the floor, how much momentum (in kg m s−1 ) will the floor acquire? Take the acceleration caused in the dumbbell due to gravity, to be 10 m s−240
Answer» A $10 kg$ iron dumbbell is dropped from a height of $80 cm$ onto a stone floor. If the dumbbell comes to rest after hitting the floor, how much momentum (in ${kg m s}^{- 1}$ ) will the floor acquire? Take the acceleration caused in the dumbbell due to gravity, to be $10 {m s}^{- 2}$ 40

Discussion

8229.	The velocity of a car is 18m/s. Express this velocity in km/hr.
Answer» The velocity of a car is $18 m / s$ . Express this velocity in $k m / h r$ .

Discussion

8230.	In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is ____ and its brightness compared to the other bulb, is ______.
Answer» In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is ____ and its brightness compared to the other bulb, is ______.

8230.

In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is and its brightness compared to the other bulb, is __.

Answer»

In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is ____ and its brightness compared to the other bulb, is ______.

Discussion

8231.	Difference between speed and velocity
Answer» Difference between speed and velocity

Discussion

8232.	There are two mutually perpendicular forces acting on an object. One force acts in the direction of motion of the object and the direction of other force is perpendicular to the motion. During this interval the kinetic energy of the body changes from 25J to 100J. What is the work done by the force acting perpendicular to the direction of object?
Answer» There are two mutually perpendicular forces acting on an object. One force acts in the direction of motion of the object and the direction of other force is perpendicular to the motion. During this interval the kinetic energy of the body changes from 25J to 100J. What is the work done by the force acting perpendicular to the direction of object?

Discussion

8233.	The ______ of a distance versus time graph is speed.
Answer» The ______ of a distance versus time graph is speed.

Discussion

8234.	A ball is moving over a horizontal smooth surface with a constant velocity. What type of forces are acting on the ball? [1 MARK]
Answer» A ball is moving over a horizontal smooth surface with a constant velocity. What type of forces are acting on the ball? [1 MARK]

Discussion

8235.	The correct velocity-time graph for zero acceleration is:
Answer» The correct velocity-time graph for zero acceleration is:

8235.

The correct velocity-time graph for zero acceleration is:

Answer»

The correct velocity-time graph for zero acceleration is:

Discussion

8236.	A packet of 400 g and volume 200 cm3 is put in a water tank. The relative density of packet is
Answer» A packet of 400 g and volume 200 cm3 is put in a water tank. The relative density of packet is

Discussion

8237.	Use the following information to answer the next question. An object weighs 2.4 N when measured on the surface of the moon. What is the mass of the object?
Answer» Use the following information to answer the next question. An object weighs 2.4 N when measured on the surface of the moon. What is the mass of the object?

8237.

Use the following information to answer the next question. An object weighs 2.4 N when measured on the surface of the moon. What is the mass of the object?

Answer»

Use the following information to answer the next question.

An object weighs 2.4 N when measured on the surface of the moon.

What is the mass of the object?

Discussion

8238.	An object travels around a circle of radius 6 m with speed 3π ms−1. The distance and displacement after 3 second is
Answer» An object travels around a circle of radius 6 m with speed $3 π m s^{- 1}$ . The distance and displacement after 3 second is

Discussion

8239.	Name and state the action and reaction in the following cases: (a) firing a bullet from a gun, (b) hammering a nail, (c) a book lying on a table, (d) a moving rocket, (e) a person walking on the floor, (f) a moving train colliding with a stationary train,
Answer» Name and state the action and reaction in the following cases: (a) firing a bullet from a gun, (b) hammering a nail, (c) a book lying on a table, (d) a moving rocket, (e) a person walking on the floor, (f) a moving train colliding with a stationary train,

Discussion

8240.	Question 16 Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.
Answer» Question 16 Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.

Discussion

8241.	A 50 m long train is crossing a 100 m bridge. Find the distance covered by the train to cross the bridge.
Answer» A 50 m long train is crossing a 100 m bridge. Find the distance covered by the train to cross the bridge.

Discussion

8242.	Question 14 A girl walks along a straight path to drop a letter in the letterbox and comes back to her initial Position. Her displacement–time graph is shown in the figure given below. Plot a velocity–time graph for the same.
Answer» Question 14 A girl walks along a straight path to drop a letter in the letterbox and comes back to her initial Position. Her displacement–time graph is shown in the figure given below. Plot a velocity–time graph for the same.

Discussion

8243.	Explain the difference between low pitched and high pitched sound using diagrams. [3 MARKS]
Answer» Explain the difference between low pitched and high pitched sound using diagrams. [3 MARKS]

Discussion

8244.	What are the quantities on which the amount of work done depends? How are they related to work?
Answer» What are the quantities on which the amount of work done depends? How are they related to work?

Discussion

8245.	A man weighs 600 N on the equator, but when he moves to the pole he finds a slight increase in his weight. This is because:
Answer» A man weighs $600 N$ on the equator, but when he moves to the pole he finds a slight increase in his weight. This is because:

Discussion

8246.	A force of 145 N results in a pressure of 12.5 Pa on an object. Calculate the area of contact in m2.11.6
Answer» A force of $145 N$ results in a pressure of $12.5 Pa$ on an object. Calculate the area of contact in $m^{2}$ . 11.6

Discussion

8247.	Which of the following graphs represent uniform motion?
Answer» Which of the following graphs represent uniform motion?

Discussion

8248.	What type of force is involved. in the formation of tides in the sea ?
Answer» What type of force is involved. in the formation of tides in the sea ?

Discussion

8249.	Which of the following position-time graphs represents a constant velocity motion?
Answer» Which of the following position-time graphs represents a constant velocity motion?

Discussion

8250.	Why p=mv . why it can't be anything else like mv2,m+v etc.
Answer» Why p=mv . why it can't be anything else like mv2,m+v etc.

Discussion

Explore topic-wise InterviewSolutions in .

An object starts from rest and travels 20m in the first 2s and 160m in the next 4s. Find its velocity at 7s after the start.

if train a and train b goes in opposite direction of each other and interchange their place after crossing each other.find the speed of train b if the both train took 9 and 16 hours respectively and speed of train a is 10km/h

Is the motion of falling of coconut uniform or non uniform?

A car is moving with a velocity of 40 m/s.The brakes are applied to retard it at a rate of 2m/s. What will be its velocity after 5 seconds of applying the brakes

Differentiate between loudness and intensity

A particle weigh 120N on earth surface. At what height above the earth surface will it's weight be 30N? (radius of earth=6400km)

The mass of earth in terms of 'g' acceleration due to gravity and 'G' universal gravitational constant is:

An ammeter is connected in a circuit in

Which of the following actions are in free fall? 1. An object dropped from a certain height. 2. An object is thrown upward or a person jumping off. 3. Flying in an aircraft. 4. A car accelerating at 9.8 ms−2 on the road.

Which of the following rods will expand more, on being heated to the same rise in temperature; the initial length of each being same.

The SI unit of weight is

The position verses time graph below represents the motion of an object. Which one of the four graphs below best represents the velocity verses time graph for this object?

In a freely falling body, the interchange of potential to kinetic energy takes place:

36 km/hr= ___ m/s

Gravity is the weakest force.justify

Arrange the speed of sound in gases Vg, solids Vs and liquids Vl in an ascending order.

Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called the ___ .

What is mass?

If 300 joule of work is required to be done to transfer 30 coulombs of charge, then the potential difference between two ends of battery is________.

A 500kg rocket is fired straight up from the earth, the engines provide 7500 newtons of thrust. Its acceleration is

A car takes 20 minutes to cover a distance of 24 km. Find its speed in m/s.

Name two examples in which the mechanical energy of a system remains constant.

Power of a convex lens of focal length 50 cm is

A body of mass 2kg having a velocity of 2m/s is brought to rest within a distance of 2m. Find the force acting on the body?

One way that you can recognize that a force is acting on an object:

A particle is moving along a circle of radius R such that it completes one revolution in 40 seconds. What will be the displacement after 2 minutes 20 seconds?

A body of mass 44 kg is moving at a velocity of 10 m/s is brought to rest in 10mins, the work done is:

A 10 kg iron dumbbell is dropped from a height of 80 cm onto a stone floor. If the dumbbell comes to rest after hitting the floor, how much momentum (in kg m s−1 ) will the floor acquire? Take the acceleration caused in the dumbbell due to gravity, to be 10 m s−240

The velocity of a car is 18m/s. Express this velocity in km/hr.

In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is ____ and its brightness compared to the other bulb, is ______.

Difference between speed and velocity

The ______ of a distance versus time graph is speed.

A ball is moving over a horizontal smooth surface with a constant velocity. What type of forces are acting on the ball? [1 MARK]

The correct velocity-time graph for zero acceleration is:

A packet of 400 g and volume 200 cm3 is put in a water tank. The relative density of packet is

Use the following information to answer the next question. An object weighs 2.4 N when measured on the surface of the moon. What is the mass of the object?

An object travels around a circle of radius 6 m with speed 3π ms−1. The distance and displacement after 3 second is

Name and state the action and reaction in the following cases: (a) firing a bullet from a gun, (b) hammering a nail, (c) a book lying on a table, (d) a moving rocket, (e) a person walking on the floor, (f) a moving train colliding with a stationary train,

Question 16 Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.

A 50 m long train is crossing a 100 m bridge. Find the distance covered by the train to cross the bridge.

Question 14 A girl walks along a straight path to drop a letter in the letterbox and comes back to her initial Position. Her displacement–time graph is shown in the figure given below. Plot a velocity–time graph for the same.

Explain the difference between low pitched and high pitched sound using diagrams. [3 MARKS]

What are the quantities on which the amount of work done depends? How are they related to work?

A man weighs 600 N on the equator, but when he moves to the pole he finds a slight increase in his weight. This is because:

A force of 145 N results in a pressure of 12.5 Pa on an object. Calculate the area of contact in m2.11.6

Which of the following graphs represent uniform motion?

What type of force is involved. in the formation of tides in the sea ?

Which of the following position-time graphs represents a constant velocity motion?

Why p=mv . why it can't be anything else like mv2,m+v etc.

In the circuit shown, the bulb marked 2R has twice the resistance of the bulb marked R. Compared with bulb 2R, the current in bulb R is and its brightness compared to the other bulb, is __.