9478 + Interview Questions in Physics Page 119 InterviewSolution

5901.	What makes a body float or sink in a liquid- boyancy or density??
Answer» What makes a body float or sink in a liquid- boyancy or density??

Discussion

5902.	Name the smallest planet of the Solar system.
Answer» Name the smallest planet of the Solar system.

Discussion

5903.	Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a [CPMT 1988]
Answer» Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57^o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a [CPMT 1988]

5903.

Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a [CPMT 1988]

Answer»

Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57^o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a

[CPMT 1988]

Discussion

5904.	Why do tails of comets face backwards to the sun?
Answer» Why do tails of comets face backwards to the sun?

Discussion

5905.	Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Answer» Define the term kinetic energy. Give one example of a body which possesses kinetic energy.

Discussion

5906.	A metal ball immersed in alcohol weighs W1 at 0∘C and W2 at 59∘C. The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that
Answer» A metal ball immersed in alcohol weighs $W_{1}$ at $0^{\circ} C$ and $W_{2}$ at $59^{\circ} C$ . The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

5906.

A metal ball immersed in alcohol weighs W1 at 0∘C and W2 at 59∘C. The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

Answer»

A metal ball immersed in alcohol weighs $W_{1}$ at $0^{\circ} C$ and $W_{2}$ at $59^{\circ} C$ . The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

Discussion

5907.	What is sound? How does a Matchbox phone works? What are its constituents? What are particles and waves? When we throw an object in water some circular waves formed and passed away why this happens? Why do we need need Wave Motion and particle motion in life? Water Wave Motion and particle motion? What is transverse wave? What is slinky how does it forms wave? Is everything away was a particle give me the justification of the statement? What is mechanical and non mechanical waves give me the examples with proper diagram? Give me the difference between mechanical and non mechanical waves with with proper examples.
Answer» What is sound? How does a Matchbox phone works? What are its constituents? What are particles and waves? When we throw an object in water some circular waves formed and passed away why this happens? Why do we need need Wave Motion and particle motion in life? Water Wave Motion and particle motion? What is transverse wave? What is slinky how does it forms wave? Is everything away was a particle give me the justification of the statement? What is mechanical and non mechanical waves give me the examples with proper diagram? Give me the difference between mechanical and non mechanical waves with with proper examples.

5907.

What is sound? How does a Matchbox phone works? What are its constituents? What are particles and waves? When we throw an object in water some circular waves formed and passed away why this happens? Why do we need need Wave Motion and particle motion in life? Water Wave Motion and particle motion? What is transverse wave? What is slinky how does it forms wave? Is everything away was a particle give me the justification of the statement? What is mechanical and non mechanical waves give me the examples with proper diagram? Give me the difference between mechanical and non mechanical waves with with proper examples.

Answer»

What is sound?

How does a Matchbox phone works?

What are its constituents?

What are particles and waves?

When we throw an object in water some circular waves formed and passed away why this happens?

Why do we need need Wave Motion and particle motion in life?

Water Wave Motion and particle motion?

What is transverse wave?

What is slinky how does it forms wave?

Is everything away was a particle give me the justification of the statement?

What is mechanical and non mechanical waves give me the examples with proper diagram?

Give me the difference between mechanical and non mechanical waves with with proper examples.

Discussion

5908.	Choose the correct statement:
Answer» Choose the correct statement:

Discussion

5909.	By tripling of the amplitude of a wave there will be ____.
Answer» By tripling of the amplitude of a wave there will be ____.

Discussion

5910.	At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you. Assumption: atmospheric pressure falls linearly with ascent.
Answer» At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you. Assumption: atmospheric pressure falls linearly with ascent.

5910.

At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you. Assumption: atmospheric pressure falls linearly with ascent.

Answer»

At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you.

Assumption: atmospheric pressure falls linearly with ascent.

Discussion

5911.	Why metals are lustrous, sonorous, malleable and electropositive in nature?
Answer» Why metals are lustrous, sonorous, malleable and electropositive in nature?

Discussion

5912.	Which of the following force is responsible for the weight of an object?
Answer» Which of the following force is responsible for the weight of an object?

Discussion

5913.	The boiling point of a liquid can be increased by ______.
Answer» The boiling point of a liquid can be increased by ______.

Discussion

5914.	Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.
Answer» Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.

Discussion

5915.	The loudness of sound is to be increased to 4 times the initial value. By what factor must the amplitude be increased?
Answer» The loudness of sound is to be increased to 4 times the initial value. By what factor must the amplitude be increased?

Discussion

5916.	What are the applications of atmospheric pressure?
Answer» What are the applications of atmospheric pressure?

Discussion

5917.	A boy is holding a bucket filled with water above the ground level. Name the force acting on the plactic bucket . Why do the forces named by you not bring about change in the state of rest or motion of bucket ?
Answer» A boy is holding a bucket filled with water above the ground level. Name the force acting on the plactic bucket . Why do the forces named by you not bring about change in the state of rest or motion of bucket ?

Discussion

5918.	If a gas has n degree of freedom, ratio of principal specific heats of the gas is
Answer» If a gas has n degree of freedom, ratio of principal specific heats of the gas is

Discussion

5919.	Which of the following friction is the least?
Answer» Which of the following friction is the least?

Discussion

5920.	If AO= 10 cm & BO = 40 cm (diameter). What is the radius of curvature & focal length?
Answer» If AO= 10 cm & BO = 40 cm (diameter). What is the radius of curvature & focal length?

5920.

If AO= 10 cm & BO = 40 cm (diameter). What is the radius of curvature & focal length?

Answer»

If AO= 10 cm & BO = 40 cm (diameter). What is the radius of curvature & focal length?

Discussion

5921.	Which of the following will produce the maximum friction? (a) rubbing of sand paper on glazed paper (b) rubbing of sand paper on glass table top (c) rubbing of sand paper on aluminium frame (d) rubbing of sand paper on sand paper
Answer» Which of the following will produce the maximum friction? (a) rubbing of sand paper on glazed paper (b) rubbing of sand paper on glass table top (c) rubbing of sand paper on aluminium frame (d) rubbing of sand paper on sand paper

Discussion

5922.	Rajat collected some rainwater in a clean glass tumbler and tested it using a tester. To his surprise he found that the compass needle showed deflection. What could be the possible reason for his observation? [3 MARKS]
Answer» Rajat collected some rainwater in a clean glass tumbler and tested it using a tester. To his surprise he found that the compass needle showed deflection. What could be the possible reason for his observation? [3 MARKS]

Discussion

5923.	Water in a dish evaporates faster than in a bottle. Give reason.
Answer» Water in a dish evaporates faster than in a bottle. Give reason.

Discussion

5924.	What is an electric meter? Where is it fixed in our house?
Answer» What is an electric meter? Where is it fixed in our house?

Discussion

5925.	Which characteristic is related to amplitude of the wave?
Answer» Which characteristic is related to amplitude of the wave?

Discussion

5926.	Why will we get resound in some areas?
Answer» Why will we get resound in some areas?

Discussion

5927.	Even Due to the gravitational force of the sun, the earth does not get attracted fully towards the core of the sun and moves around it in an elliptical orbit. Why does it not get fully attracted towards the core of the sun and also why does it move in an elliptical orbit ?
Answer» Even Due to the gravitational force of the sun, the earth does not get attracted fully towards the core of the sun and moves around it in an elliptical orbit. Why does it not get fully attracted towards the core of the sun and also why does it move in an elliptical orbit ?

Discussion

5928.	How are waves generated in the sea?
Answer» How are waves generated in the sea?

Discussion

5929.	The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as:
Answer» The pressure $P_{1}$ at a certain depth in river water and $P_{2}$ at the same depth in sea water are related as:

Discussion

5930.	300 m= ______ km
Answer» $300 m =$ ______ $k m$

Discussion

5931.	Is the gravitational force of earth same as it's magnetic force?
Answer» Is the gravitational force of earth same as it's magnetic force?

Discussion

5932.	Initially, will the brass disc and gold leaf electroscope be having the same charge?
Answer» Initially, will the brass disc and gold leaf electroscope be having the same charge?

Discussion

5933.	Second smallest planet in our solar system is
Answer» Second smallest planet in our solar system is

Discussion

5934.	The area of given figure is: Note : All measurements are in millimetres
Answer» The area of given figure is: Note : All measurements are in millimetres

5934.

The area of given figure is: Note : All measurements are in millimetres

Answer»

The area of given figure is:
Note : All measurements are in millimetres

Discussion

5935.	It is difficuilt to walk on ice because of
Answer» It is difficuilt to walk on ice because of

Discussion

5936.	What is the difference between note and tone?
Answer» What is the difference between note and tone?

Discussion

5937.	Three numbers form a Pythagorean triplet. Two of them are 15 and 17 where 17 is the largest of them. The third number is
Answer» Three numbers form a Pythagorean triplet. Two of them are 15 and 17 where 17 is the largest of them. The third number is

Discussion

5938.	Why do planets not twinkle?
Answer» Why do planets not twinkle?

Discussion

5939.	Pressure exerted on a surface depends upon ___________and_________.
Answer» Pressure exerted on a surface depends upon ___________and_________.

Discussion

5940.	How many dot patterns or characters are there in Braille system?
Answer» How many dot patterns or characters are there in Braille system?

Discussion

5941.	Which star (except the sun) is closest to our earth acording to me, it should be Proxima Centauri which is 4.22 light years away but in few of the books I have read that it is Alpha Centauri.... So which one is correct???
Answer» Which star (except the sun) is closest to our earth acording to me, it should be Proxima Centauri which is 4.22 light years away but in few of the books I have read that it is Alpha Centauri.... So which one is correct???

Discussion

5942.	The CGS unit of specific heat capacity is:
Answer» The CGS unit of specific heat capacity is:

Discussion

5943.	Why do we need a capacitor to store energy when we already have a battery to do that?
Answer» Why do we need a capacitor to store energy when we already have a battery to do that?

Discussion

5944.	State two factors on which the kinetic energy of a moving body depends.
Answer» State two factors on which the kinetic energy of a moving body depends.

Discussion

5945.	Observation 1: Try to stop a ball coming towards you,so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of ball. Observation 2: In the same case, you apply the force of same magnitude but in same direction of the motion of the ball. Observation 3: In the same case, you apply the force in the opposite direction of the motion of the ball but its magnitude is less. In which case/cases you will stop the boundary. Why is that? [3 MARKS]
Answer» Observation 1: Try to stop a ball coming towards you,so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of ball. Observation 2: In the same case, you apply the force of same magnitude but in same direction of the motion of the ball. Observation 3: In the same case, you apply the force in the opposite direction of the motion of the ball but its magnitude is less. In which case/cases you will stop the boundary. Why is that? [3 MARKS]

5945.

Observation 1: Try to stop a ball coming towards you,so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of ball. Observation 2: In the same case, you apply the force of same magnitude but in same direction of the motion of the ball. Observation 3: In the same case, you apply the force in the opposite direction of the motion of the ball but its magnitude is less. In which case/cases you will stop the boundary. Why is that? [3 MARKS]

Answer»

Observation 1: Try to stop a ball coming towards you,so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of ball.

Observation 2: In the same case, you apply the force of same magnitude but in same direction of the motion of the ball.

Observation 3: In the same case, you apply the force in the opposite direction of the motion of the ball but its magnitude is less.

In which case/cases you will stop the boundary. Why is that? [3 MARKS]

Discussion

5946.	Statement 1: The flow of current in a poor conductor is impossible. Statement 2: Under certain conditions, current flows through a poor conductor.
Answer» Statement 1: The flow of current in a poor conductor is impossible. Statement 2: Under certain conditions, current flows through a poor conductor.

5946.

Statement 1: The flow of current in a poor conductor is impossible. Statement 2: Under certain conditions, current flows through a poor conductor.

Answer»

Statement 1: The flow of current in a poor conductor is impossible.

Statement 2: Under certain conditions, current flows through a poor conductor.

Discussion

5947.	The angle between the normal and the incident ray is known as the:
Answer» The angle between the normal and the incident ray is known as the:

Discussion

5948.	Why it is difficult to balance our body when we accidentally step on a peel of banana?
Answer» Why it is difficult to balance our body when we accidentally step on a peel of banana?

Discussion

5949.	How does an ant walk on walls?
Answer» How does an ant walk on walls?

Discussion

5950.	Why do objects move when we apply force?
Answer» Why do objects move when we apply force?

Discussion

Explore topic-wise InterviewSolutions in .

What makes a body float or sink in a liquid- boyancy or density??

Name the smallest planet of the Solar system.

Figure represents a glass plate placed vertically on a horizontal table with a beam of unpolarised light falling on its surface at the polarising angle of 57o with the normal. The electric vector in the reflected light on screen S will vibrate with respect to the plane of incidence in a [CPMT 1988]

Why do tails of comets face backwards to the sun?

Define the term kinetic energy. Give one example of a body which possesses kinetic energy.

A metal ball immersed in alcohol weighs W1 at 0∘C and W2 at 59∘C. The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be shown that

Choose the correct statement:

By tripling of the amplitude of a wave there will be ____.

At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you. Assumption: atmospheric pressure falls linearly with ascent.

Why metals are lustrous, sonorous, malleable and electropositive in nature?

Which of the following force is responsible for the weight of an object?

The boiling point of a liquid can be increased by ______.

Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.

The loudness of sound is to be increased to 4 times the initial value. By what factor must the amplitude be increased?

What are the applications of atmospheric pressure?

A boy is holding a bucket filled with water above the ground level. Name the force acting on the plactic bucket . Why do the forces named by you not bring about change in the state of rest or motion of bucket ?

If a gas has n degree of freedom, ratio of principal specific heats of the gas is

Which of the following friction is the least?

If AO= 10 cm &amp; BO = 40 cm (diameter). What is the radius of curvature &amp; focal length?

Which of the following will produce the maximum friction? (a) rubbing of sand paper on glazed paper (b) rubbing of sand paper on glass table top (c) rubbing of sand paper on aluminium frame (d) rubbing of sand paper on sand paper

Rajat collected some rainwater in a clean glass tumbler and tested it using a tester. To his surprise he found that the compass needle showed deflection. What could be the possible reason for his observation? [3 MARKS]

Water in a dish evaporates faster than in a bottle. Give reason.

What is an electric meter? Where is it fixed in our house?

Which characteristic is related to amplitude of the wave?

Why will we get resound in some areas?

Even Due to the gravitational force of the sun, the earth does not get attracted fully towards the core of the sun and moves around it in an elliptical orbit. Why does it not get fully attracted towards the core of the sun and also why does it move in an elliptical orbit ?

How are waves generated in the sea?

The pressure P1 at a certain depth in river water and P2 at the same depth in sea water are related as:

300 m= ______ km

Is the gravitational force of earth same as it's magnetic force?

Initially, will the brass disc and gold leaf electroscope be having the same charge?

Second smallest planet in our solar system is

The area of given figure is: Note : All measurements are in millimetres

It is difficuilt to walk on ice because of

What is the difference between note and tone?

Three numbers form a Pythagorean triplet. Two of them are 15 and 17 where 17 is the largest of them. The third number is

Why do planets not twinkle?

Pressure exerted on a surface depends upon ___________and_________.

How many dot patterns or characters are there in Braille system?

Which star (except the sun) is closest to our earth acording to me, it should be Proxima Centauri which is 4.22 light years away but in few of the books I have read that it is Alpha Centauri.... So which one is correct???

The CGS unit of specific heat capacity is:

Why do we need a capacitor to store energy when we already have a battery to do that?

State two factors on which the kinetic energy of a moving body depends.

Statement 1: The flow of current in a poor conductor is impossible. Statement 2: Under certain conditions, current flows through a poor conductor.

The angle between the normal and the incident ray is known as the:

Why it is difficult to balance our body when we accidentally step on a peel of banana?

How does an ant walk on walls?

Why do objects move when we apply force?

If AO= 10 cm & BO = 40 cm (diameter). What is the radius of curvature & focal length?

Pressure exerted on a surface depends upon ___and_.