13232 + Interview Questions in Physics Page 246 InterviewSolution

12251.	Name the physical quantity which causes motion in a body.
Answer» Name the physical quantity which causes motion in a body.

Discussion

12252.	Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is
Answer» Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is

12252.

Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is

Answer»

Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is

Discussion

12253.	A ball hits a wall horizontally at 6 m/s. It rebounds horizontally at 4.4m/s. The ball is in contact with the wall for 0.04 s. What is the acceleration of the ball?
Answer» A ball hits a wall horizontally at 6 m/s. It rebounds horizontally at 4.4m/s. The ball is in contact with the wall for 0.04 s. What is the acceleration of the ball?

Discussion

12254.	If an object is placed between C and F in front of a concave mirror, then the image will form
Answer» If an object is placed between C and F in front of a concave mirror, then the image will form

Discussion

12255.	Which force is directly responsible for the flotation of a body in a liquid?
Answer» Which force is directly responsible for the flotation of a body in a liquid?

Discussion

12256.	A car covers a distance of 250 m in 6 seconds. If the acceleration of the car is 6 ms−2. Find the final velocity of the car.
Answer» A car covers a distance of 250 m in 6 seconds. If the acceleration of the car is $6 m s^{- 2}$ . Find the final velocity of the car.

Discussion

12257.	A body of mass 1 kg is initially at rest. A force of 10 N is applied on it for 2 s. What is the work done on the object?
Answer» A body of mass $1 k g$ is initially at rest. A force of $10 N$ is applied on it for $2 s$ . What is the work done on the object?

Discussion

12258.	When a carpet is beaten with a stick, dust will come out. Why does this happen?
Answer» When a carpet is beaten with a stick, dust will come out. Why does this happen?

Discussion

12259.	During time equal to periodic time the distance travelled by a wave in the direction of wave propagation is known as what
Answer» During time equal to periodic time the distance travelled by a wave in the direction of wave propagation is known as what

Discussion

12260.	A ball when slid on horizontal surface evenyualy comes to stop even though seemingly no force is acting on it. does noy it contradict gallieo,s statement?
Answer» A ball when slid on horizontal surface evenyualy comes to stop even though seemingly no force is acting on it. does noy it contradict gallieo,s statement?

Discussion

12261.	Show that the weight of an object on the moon is 1/6 of its weight on the earth.
Answer» Show that the weight of an object on the moon is 1/6 of its weight on the earth.

Discussion

12262.	A train 120 m long is going towards north direction at a speed of 8 m / s . A parrot flies at the speed of 4 m / s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is
Answer» A train 120 m long is going towards north direction at a speed of 8 m / s . A parrot flies at the speed of 4 m / s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is

Discussion

12263.	Describe the energy changes which take place in a radio.
Answer» Describe the energy changes which take place in a radio.

Discussion

12264.	A particle is moving in a circular path of radius r, the displacement after half a circle would be
Answer» A particle is moving in a circular path of radius $r,$ the displacement after half a circle would be

Discussion

12265.	An auto travels the first halftime with a uniform speed u and the next halftime with a uniform speed v. Find its average speed.
Answer» An auto travels the first halftime with a uniform speed u and the next halftime with a uniform speed v. Find its average speed.

Discussion

12266.	Water stored in a dam possesses : (a) no energy (b) electrical energy (c) kinetic energy (d) potential energy
Answer» Water stored in a dam possesses : (a) no energy (b) electrical energy (c) kinetic energy (d) potential energy

12266.

Water stored in a dam possesses : (a) no energy (b) electrical energy (c) kinetic energy (d) potential energy

Answer»

Water stored in a dam possesses :

(a) no energy

(b) electrical energy

(c) kinetic energy

(d) potential energy

Discussion

12267.	Please explain the concept given in the app that states that when two objects are immersed in water,the object that displace more water is more dense even both have same mass.
Answer» Please explain the concept given in the app that states that when two objects are immersed in water,the object that displace more water is more dense even both have same mass.

Discussion

12268.	If a body is falling from the top of a building, the direction of motion and the direction of acceleration is the same. So will the will it be acceleration or retardation?
Answer» If a body is falling from the top of a building, the direction of motion and the direction of acceleration is the same. So will the will it be acceleration or retardation?

Discussion

12269.	Power=I2 R=IV then is P proportional to I or I2 ?
Answer» Power= $I^{2}$ R=IV then is P proportional to I or $I^{2}$ ?

Discussion

12270.	Define lenear momentum and state it S.I. unit.
Answer» Define lenear momentum and state it S.I. unit.

Discussion

12271.	A bus starts from rest and attains 40 km/hr velocity after 10 second s. Calculate the accelaaccele in km/hr and ms-2
Answer» A bus starts from rest and attains 40 km/hr velocity after 10 second s. Calculate the accelaaccele in km/hr and ms^-2

Discussion

12272.	Pendulum A makes 13 oscillations in 5 seconds and pendulum B makes 10 oscillations in 3 seconds. Which has a higher frequency?
Answer» Pendulum A makes 13 oscillations in 5 seconds and pendulum B makes 10 oscillations in 3 seconds. Which has a higher frequency?

Discussion

12273.	Derive an expression for acceleration of gravity
Answer» Derive an expression for acceleration of gravity

Discussion

12274.	Explain, the reason sound propagates faster through metals even though they are denser than gases is that they are stiffer ( i.e., less incompressible). for example: steel is 6000 times denser than air but 2000000 times more elastic than yeah, so sound travel 16 times faster in steel then in air.
Answer» Explain, the reason sound propagates faster through metals even though they are denser than gases is that they are stiffer ( i.e., less incompressible). for example: steel is 6000 times denser than air but 2000000 times more elastic than yeah, so sound travel 16 times faster in steel then in air.

Discussion

12275.	A boy standing in front of a wall at a distance of 85 m produces 2 claps per second. He noticed that the sound of his clapping coincided with the echo. The echo is heard only once when clapping is stopped. Calculate the speed of sound.
Answer» A boy standing in front of a wall at a distance of 85 m produces 2 claps per second. He noticed that the sound of his clapping coincided with the echo. The echo is heard only once when clapping is stopped. Calculate the speed of sound.

Discussion

12276.	Derive kinetic energy
Answer» Derive kinetic energy

Discussion

12277.	A uniform chain of mass M and length L lies on a horizontal table such that one third of its length hangs from the edge of the table. The work done is pulling the hanging part on the table will be? (with explaination plz)
Answer» A uniform chain of mass M and length L lies on a horizontal table such that one third of its length hangs from the edge of the table. The work done is pulling the hanging part on the table will be? (with explaination plz)

12277.

A uniform chain of mass M and length L lies on a horizontal table such that one third of its length hangs from the edge of the table. The work done is pulling the hanging part on the table will be? (with explaination plz)

Answer»

A uniform chain of mass M and length L lies on a horizontal table such that one third of its length hangs from the edge of the table. The work done is pulling the hanging part on the table will be?

(with explaination plz)

Discussion

12278.	Non – violence in the law of good souls is as violence in the law of the __________.
Answer» Non – violence in the law of good souls is as violence in the law of the __________.

Discussion

12279.	What is the natural state of objects.
Answer» What is the natural state of objects.

Discussion

12280.	What is the S.I unit of universal gravitational constant?
Answer» What is the S.I unit of universal gravitational constant?

Discussion

12281.	John covers a part of the journey at 20kmhr and the remaining at 70kmhr, taking total of 8 hours to cover the distance of 400 km. How many hours has he been driving at 20kmhr?
Answer» John covers a part of the journey at $20 \frac{k m}{h r}$ and the remaining at $70 \frac{k m}{h r}$ , taking total of 8 hours to cover the distance of 400 km. How many hours has he been driving at $20 \frac{k m}{h r}$ ?

Discussion

12282.	The average density of the earth in terms of g (acceleration due to gravity), G (Universal gravitational constant) and R (Radius of earth) is
Answer» The average density of the earth in terms of g (acceleration due to gravity), G (Universal gravitational constant) and R (Radius of earth) is

Discussion

12283.	A body floats in liquid A of density ρ1 with a part of it submerged while in liquid B of density ρ2, it floats with total body submerged. The densities ρ1 and ρ2 are related as
Answer» A body floats in liquid A of density $ρ_{1}$ with a part of it submerged while in liquid B of density $ρ_{2}$ , it floats with total body submerged. The densities $ρ_{1}$ and $ρ_{2}$ are related as

Discussion

12284.	How long would it take to travel 50 km traveling at a speed of 10 km/hr?
Answer» How long would it take to travel 50 km traveling at a speed of 10 km/hr?

Discussion

12285.	A pump can lift water of 150 kg in 25 s to store it in an overhead tank. The tank is located at a height of 15 m. Find the power of the pump. (Takeg=9.8 ms−2)
Answer» A pump can lift water of $150 k g$ in $25 s$ to store it in an overhead tank. The tank is located at a height of $15 m$ . Find the power of the pump. $(T a k e g = 9.8 m s^{- 2})$

Discussion

12286.	Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and to the walls of the containing vessel. This law was first formulated by:
Answer» Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and to the walls of the containing vessel. This law was first formulated by:

Discussion

12287.	If 'R' is the radius of earth, the height from the surface at which the weight of a body becomes one-fourth of its weight, on the surface of earth is:
Answer» If 'R' is the radius of earth, the height from the surface at which the weight of a body becomes one-fourth of its weight, on the surface of earth is:

Discussion

12288.	When a solid body is fully immersed in a liquid, the volume of the displaced liquid is:
Answer» When a solid body is fully immersed in a liquid, the volume of the displaced liquid is:

Discussion

12289.	A stationary rail engine produces whistle with a frequency 2600 Hz. A person standing at a distance of 550 m from engine will listen ___________ no. of waves within one minute.
Answer» A stationary rail engine produces whistle with a frequency 2600 Hz. A person standing at a distance of 550 m from engine will listen ___________ no. of waves within one minute.

Discussion

12290.	Which among the following coloured light has the shortest wavelength?
Answer» Which among the following coloured light has the shortest wavelength?

Discussion

12291.	Optical Telescopes are also known as ___.
Answer» Optical Telescopes are also known as ___.

Discussion

12292.	A block weighing 1 kg is in the shape of cube whose length is 10cm . It is kept on the table . Find the force acting on the object?
Answer» A block weighing 1 kg is in the shape of cube whose length is 10cm . It is kept on the table . Find the force acting on the object?

Discussion

12293.	A roll of cloth which has a length of 1200.36 cm is used for making 6 identical shirts. The length of the cloth used for making one shirt is ______.
Answer» A roll of cloth which has a length of $1200.36 c m$ is used for making $6$ identical shirts. The length of the cloth used for making one shirt is ______.

Discussion

12294.	Why does the blood pressure in humans better at the peak than the brain ?
Answer» Why does the blood pressure in humans better at the peak than the brain ?

Discussion

12295.	A bullet makes a clear little hole in a glass, when it hits it, but if we throw a stone at the glass, the whole glass shatters. Why? Which law will you use to support your answer?
Answer» A bullet makes a clear little hole in a glass, when it hits it, but if we throw a stone at the glass, the whole glass shatters. Why? Which law will you use to support your answer?

Discussion

12296.	If the speed-time graph is a straight line parallel to the time axis, then the body is
Answer» If the speed-time graph is a straight line parallel to the time axis, then the body is

Discussion

12297.	Views of Newton vs Einstein on gravity.. and what is spacetime? breif explaination please.
Answer» Views of Newton vs Einstein on gravity.. and what is spacetime? breif explaination please.

Discussion

12298.	Site an example in day to day life where work done is zero.
Answer» Site an example in day to day life where work done is zero.

Discussion

12299.	Equation of motion of a projectile is Y =Px + Qx2 . Then the horizontal range of the projection is
Answer» Equation of motion of a projectile is Y =Px + Qx². Then the horizontal range of the projection is

Discussion

12300.	Please explain how TOTAL WORK DONE = WORK DONE BY CONCERVATIVE FORCES + WORK DONE BY NON- CONCERVATIVE FORCES + WORK DONE BY EXTERNAL FORCE
Answer» Please explain how TOTAL WORK DONE = WORK DONE BY CONCERVATIVE FORCES + WORK DONE BY NON- CONCERVATIVE FORCES + WORK DONE BY EXTERNAL FORCE

Discussion

Explore topic-wise InterviewSolutions in .

Name the physical quantity which causes motion in a body.

Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is

A ball hits a wall horizontally at 6 m/s. It rebounds horizontally at 4.4m/s. The ball is in contact with the wall for 0.04 s. What is the acceleration of the ball?

If an object is placed between C and F in front of a concave mirror, then the image will form

Which force is directly responsible for the flotation of a body in a liquid?

A car covers a distance of 250 m in 6 seconds. If the acceleration of the car is 6 ms−2. Find the final velocity of the car.

A body of mass 1 kg is initially at rest. A force of 10 N is applied on it for 2 s. What is the work done on the object?

When a carpet is beaten with a stick, dust will come out. Why does this happen?

During time equal to periodic time the distance travelled by a wave in the direction of wave propagation is known as what

A ball when slid on horizontal surface evenyualy comes to stop even though seemingly no force is acting on it. does noy it contradict gallieo,s statement?

Show that the weight of an object on the moon is 1/6 of its weight on the earth.

A train 120 m long is going towards north direction at a speed of 8 m / s . A parrot flies at the speed of 4 m / s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is

Describe the energy changes which take place in a radio.

A particle is moving in a circular path of radius r, the displacement after half a circle would be

An auto travels the first halftime with a uniform speed u and the next halftime with a uniform speed v. Find its average speed.

Water stored in a dam possesses : (a) no energy (b) electrical energy (c) kinetic energy (d) potential energy

Please explain the concept given in the app that states that when two objects are immersed in water,the object that displace more water is more dense even both have same mass.

If a body is falling from the top of a building, the direction of motion and the direction of acceleration is the same. So will the will it be acceleration or retardation?

Power=I2 R=IV then is P proportional to I or I2 ?

Define lenear momentum and state it S.I. unit.

A bus starts from rest and attains 40 km/hr velocity after 10 second s. Calculate the accelaaccele in km/hr and ms​​​​​-2

Pendulum A makes 13 oscillations in 5 seconds and pendulum B makes 10 oscillations in 3 seconds. Which has a higher frequency?

Derive an expression for acceleration of gravity

Explain, the reason sound propagates faster through metals even though they are denser than gases is that they are stiffer ( i.e., less incompressible). for example: steel is 6000 times denser than air but 2000000 times more elastic than yeah, so sound travel 16 times faster in steel then in air.

A boy standing in front of a wall at a distance of 85 m produces 2 claps per second. He noticed that the sound of his clapping coincided with the echo. The echo is heard only once when clapping is stopped. Calculate the speed of sound.

Derive kinetic energy

A uniform chain of mass M and length L lies on a horizontal table such that one third of its length hangs from the edge of the table. The work done is pulling the hanging part on the table will be? (with explaination plz)

Non – violence in the law of good souls is as violence in the law of the __________.

What is the natural state of objects.

What is the S.I unit of universal gravitational constant?

John covers a part of the journey at 20kmhr and the remaining at 70kmhr, taking total of 8 hours to cover the distance of 400 km. How many hours has he been driving at 20kmhr?

The average density of the earth in terms of g (acceleration due to gravity), G (Universal gravitational constant) and R (Radius of earth) is

A body floats in liquid A of density ρ1 with a part of it submerged while in liquid B of density ρ2, it floats with total body submerged. The densities ρ1 and ρ2 are related as

How long would it take to travel 50 km traveling at a speed of 10 km/hr?

A pump can lift water of 150 kg in 25 s to store it in an overhead tank. The tank is located at a height of 15 m. Find the power of the pump. (Takeg=9.8 ms−2)

Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and to the walls of the containing vessel. This law was first formulated by:

If 'R' is the radius of earth, the height from the surface at which the weight of a body becomes one-fourth of its weight, on the surface of earth is:

When a solid body is fully immersed in a liquid, the volume of the displaced liquid is:

A stationary rail engine produces whistle with a frequency 2600 Hz. A person standing at a distance of 550 m from engine will listen ___________ no. of waves within one minute.

Which among the following coloured light has the shortest wavelength?

Optical Telescopes are also known as ___.

A block weighing 1 kg is in the shape of cube whose length is 10cm . It is kept on the table . Find the force acting on the object?

A roll of cloth which has a length of 1200.36 cm is used for making 6 identical shirts. The length of the cloth used for making one shirt is ______.

Why does the blood pressure in humans better at the peak than the brain ?

A bullet makes a clear little hole in a glass, when it hits it, but if we throw a stone at the glass, the whole glass shatters. Why? Which law will you use to support your answer?

If the speed-time graph is a straight line parallel to the time axis, then the body is

Views of Newton vs Einstein on gravity.. and what is spacetime? breif explaination please.

Site an example in day to day life where work done is zero.

Equation of motion of a projectile is Y =Px + Qx2 . Then the horizontal range of the projection is

Please explain how TOTAL WORK DONE = WORK DONE BY CONCERVATIVE FORCES + WORK DONE BY NON- CONCERVATIVE FORCES + WORK DONE BY EXTERNAL FORCE

A bus starts from rest and attains 40 km/hr velocity after 10 second s. Calculate the accelaaccele in km/hr and ms-2