9478 + Interview Questions in Physics Page 126 InterviewSolution

6251.	The hero of a western movie listens for an oncoming train by putting his ear to the track. Why does this method give an earlier warning of the approach of a train than just listening in the usual way?
Answer» The hero of a western movie listens for an oncoming train by putting his ear to the track. Why does this method give an earlier warning of the approach of a train than just listening in the usual way?

Discussion

6252.	In an alternating current, the change in direction of current is
Answer» In an alternating current, the change in direction of current is

Discussion

6253.	A BMW car is travelling on a road and its speed is changed from 70 Km/hr to 90 Km/hr. This change is shown by the indicator in the speedometer. The transformation process that indicator has gone through is ___.
Answer» A BMW car is travelling on a road and its speed is changed from 70 Km/hr to 90 Km/hr. This change is shown by the indicator in the speedometer. The transformation process that indicator has gone through is ___.

Discussion

6254.	An ebonite rod rubbed with fur is suspended near another ebonite rod rubbed with fur. State your observation and give a reason to support your answer.
Answer» An ebonite rod rubbed with fur is suspended near another ebonite rod rubbed with fur. State your observation and give a reason to support your answer.

Discussion

6255.	Why we use spikes on shoes to play sports?
Answer» Why we use spikes on shoes to play sports?

Discussion

6256.	what is the relationship between pressure and depth h in a liquid of density d
Answer» what is the relationship between pressure and depth h in a liquid of density d

Discussion

6257.	A chef while cooking, cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What is the reason for this difference?
Answer» A chef while cooking, cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What is the reason for this difference?

Discussion

6258.	Name the unit in which the loudness of sound is expressed.
Answer» Name the unit in which the loudness of sound is expressed.

Discussion

6259.	Is buoyancy related to liquid pressure?
Answer» Is buoyancy related to liquid pressure?

Discussion

6260.	Which of the following statement(s) is/are true for displacement?
Answer» Which of the following statement(s) is/are true for displacement?

Discussion

6261.	I heard in oceans any mineral present because of mineral ocean colour is blue
Answer» I heard in oceans any mineral present because of mineral ocean colour is blue

Discussion

6262.	Why does saturn has low weight or density??
Answer» Why does saturn has low weight or density??

Discussion

6263.	Which of the followinng is used for measuring temperature?
Answer» Which of the followinng is used for measuring temperature?

Discussion

6264.	When the brake of a train is applied, it slows down. Which of the following is produced?
Answer» When the brake of a train is applied, it slows down. Which of the following is produced?

Discussion

6265.	For what value of k, we have 7x2 - 5x + k = -4, given that x = -2,
Answer» For what value of k, we have 7x² - 5x + k = -4, given that x = -2,

Discussion

6266.	Why does a lightning always occur during a rain?
Answer» Why does a lightning always occur during a rain?

Discussion

6267.	The minimum distance between the source and the reflector, so that an echo is heard is approximately equal to _______.
Answer» The minimum distance between the source and the reflector, so that an echo is heard is approximately equal to _______.

Discussion

6268.	The largest and the shortest distance of the earth from the sun are r1 and r2, its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun
Answer» The largest and the shortest distance of the earth from the sun are $r_{1}$ and $r_{2}$ , its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun

Discussion

6269.	Find the solid angle of a spherical surface of area 1.5πr2 at its center.
Answer» Find the solid angle of a spherical surface of area $1.5 π r^{2}$ at its center.

Discussion

6270.	Out of air and glass, which is optically rarer ? Give reason.
Answer» Out of air and glass, which is optically rarer ? Give reason.

Discussion

6271.	One of the following can hear infrasound. This one is : (a) dog (b) bat (c) rhinoceros (d) humans
Answer» One of the following can hear infrasound. This one is : (a) dog (b) bat (c) rhinoceros (d) humans

6271.

One of the following can hear infrasound. This one is : (a) dog (b) bat (c) rhinoceros (d) humans

Answer»

One of the following can hear infrasound. This one is :

(a) dog (b) bat (c) rhinoceros (d) humans

Discussion

6272.	The picture shows tree line along the sea coast on an island near the equator. As shown, the top of the tree is bent in one direction during the day. Are the trees bent towards the sea or away from it? Explain. [3 MARKS]
Answer» The picture shows tree line along the sea coast on an island near the equator. As shown, the top of the tree is bent in one direction during the day. Are the trees bent towards the sea or away from it? Explain. [3 MARKS]

Discussion

6273.	In an electrolytic cell, the electrode at which the electrons enter the solution is called the ________. The chemical change that occurs at this electrode is called as _________.
Answer» In an electrolytic cell, the electrode at which the electrons enter the solution is called the ________. The chemical change that occurs at this electrode is called as _________.

Discussion

6274.	Explain ± ne where n is an integer and e =1.6×10^-19C and what is C
Answer» Explain ± ne where n is an integer and e =1.6×10^-19C and what is C

Discussion

6275.	Friction between two surfaces may be reduced by all of the following methods EXCEPT:
Answer» Friction between two surfaces may be reduced by all of the following methods EXCEPT:

Discussion

6276.	Assertion (A): Chrome plating is considered to be toxic. Reason (R): The processes that require chrome plating are usually very toxic.
Answer» Assertion (A): Chrome plating is considered to be toxic. Reason (R): The processes that require chrome plating are usually very toxic.

Discussion

6277.	Can a liquid exert pressure upwards ?
Answer» Can a liquid exert pressure upwards ?

Discussion

6278.	(a) Name two contact forces. (b) Name two non-contact forces.
Answer» (a) Name two contact forces. (b) Name two non-contact forces.

Discussion

6279.	When you walk across a carpet (in wool socks especially) you will transfer electrons from the carpet to your socks. These electrons spread out over the surface of your body, so now you have a net negative charge. Then when you touch the door knob, you ________ from the static electricity you generated.
Answer» When you walk across a carpet (in wool socks especially) you will transfer electrons from the carpet to your socks. These electrons spread out over the surface of your body, so now you have a net negative charge. Then when you touch the door knob, you ________ from the static electricity you generated.

Discussion

6280.	Which if the following precautions must be followed if a house is built in an earthquake prone zone? [3 MARKS]
Answer» Which if the following precautions must be followed if a house is built in an earthquake prone zone? [3 MARKS]

Discussion

6281.	During a thunderstorm, stay away from tall objects as lightning takes the ______ path to the ground.
Answer» During a thunderstorm, stay away from tall objects as lightning takes the ______ path to the ground.

Discussion

6282.	Which of the following statement is true about electrolytes?
Answer» Which of the following statement is true about electrolytes?

Discussion

6283.	What are fluids ? Name two common fluids.
Answer» What are fluids ? Name two common fluids.

Discussion

6284.	Charges are developed in the clouds because of:
Answer» Charges are developed in the clouds because of:

Discussion

6285.	Question 11 A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?
Answer» Question 11 A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?

Discussion

6286.	Avinash dives into a swimming pool and reaches its bottom. He experiences a pressure of 1.26 atm of that point. What is the gauge pressure at that point?
Answer» Avinash dives into a swimming pool and reaches its bottom. He experiences a pressure of 1.26 atm of that point. What is the gauge pressure at that point?

Discussion

6287.	The intensity of an earthquake is expressed in terms of magnitude on a scale called:
Answer» The intensity of an earthquake is expressed in terms of magnitude on a scale called:

Discussion

6288.	a)What is pressure? b) Define atmospheric pressure. [3 MARKS]
Answer» a)What is pressure? b) Define atmospheric pressure. [3 MARKS]

Discussion

6289.	The time taken by the moon to move ___ of its path of revolution is one asterism.
Answer» The time taken by the moon to move ___ of its path of revolution is one asterism.

Discussion

6290.	Answer the following : A. What is the reason for the heat being produced when we rub our hands? B. Where will it require more effort to drag a box - on marble or on concrete road? Why? [5 MARKS]
Answer» Answer the following : A. What is the reason for the heat being produced when we rub our hands? B. Where will it require more effort to drag a box - on marble or on concrete road? Why? [5 MARKS]

Discussion

6291.	Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?
Answer» Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?

Discussion

6292.	In a concave mirror, if the object is placed between focus and centre of curvature then where will the image be formed?
Answer» In a concave mirror, if the object is placed between focus and centre of curvature then where will the image be formed?

Discussion

6293.	An electric bulb is rated 220V and 100W. Now a car needs replacement for the broken cabin light. This bulb is connected. The battery provides a potential difference of 12V. Why does the bulb glow very dim?
Answer» An electric bulb is rated 220V and 100W. Now a car needs replacement for the broken cabin light. This bulb is connected. The battery provides a potential difference of 12V. Why does the bulb glow very dim?

Discussion

6294.	Does a body sinks deeper in liquid of lower density than in a liquid of higher density
Answer» Does a body sinks deeper in liquid of lower density than in a liquid of higher density

Discussion

6295.	A wave is a disturbance created in an elastic medium and it transfers ______.
Answer» A wave is a disturbance created in an elastic medium and it transfers ______.

Discussion

6296.	Write 5 valid points on hearing impairment. [5 MARKS]
Answer» Write 5 valid points on hearing impairment. [5 MARKS]

Discussion

6297.	If we begin to observe Earth from 1 January 2001, how many revolutions did Earth make around Sun until 1 January 2005?
Answer» If we begin to observe Earth from 1 January 2001, how many revolutions did Earth make around Sun until 1 January 2005?

Discussion

6298.	In the household electric circuit,if one bulb is fused in a room,the other bulbs keep glowing.Explain the reason.
Answer» In the household electric circuit,if one bulb is fused in a room,the other bulbs keep glowing.Explain the reason.

Discussion

6299.	The angle of incidence for a ray incident perpendicular to the mirror is ___.
Answer» The angle of incidence for a ray incident perpendicular to the mirror is ___.

Discussion

6300.	Which of the following change appreciably when a batsman hits a moving cricket ball? A. Shape B. Direction C.Size D.Speed (a) A and B (b) B and C (c) A and C (d) B and D
Answer» Which of the following change appreciably when a batsman hits a moving cricket ball? A. Shape B. Direction C.Size D.Speed (a) A and B (b) B and C (c) A and C (d) B and D

Discussion

Explore topic-wise InterviewSolutions in .

The hero of a western movie listens for an oncoming train by putting his ear to the track. Why does this method give an earlier warning of the approach of a train than just listening in the usual way?

In an alternating current, the change in direction of current is

A BMW car is travelling on a road and its speed is changed from 70 Km/hr to 90 Km/hr. This change is shown by the indicator in the speedometer. The transformation process that indicator has gone through is ___.

An ebonite rod rubbed with fur is suspended near another ebonite rod rubbed with fur. State your observation and give a reason to support your answer.

Why we use spikes on shoes to play sports?

what is the relationship between pressure and depth h in a liquid of density d

A chef while cooking, cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What is the reason for this difference?

Name the unit in which the loudness of sound is expressed.

Is buoyancy related to liquid pressure?

Which of the following statement(s) is/are true for displacement?

I heard in oceans any mineral present because of mineral ocean colour is blue

Why does saturn has low weight or density??

Which of the followinng is used for measuring temperature?

When the brake of a train is applied, it slows down. Which of the following is produced?

For what value of k, we have 7x2 - 5x + k = -4, given that x = -2,

Why does a lightning always occur during a rain?

The minimum distance between the source and the reflector, so that an echo is heard is approximately equal to _______.

The largest and the shortest distance of the earth from the sun are r1 and r2, its distance from the sun when it is at the perpendicular to the major axis of the orbit drawn from the sun

Find the solid angle of a spherical surface of area 1.5πr2 at its center.

Out of air and glass, which is optically rarer ? Give reason.

One of the following can hear infrasound. This one is : (a) dog (b) bat (c) rhinoceros (d) humans

The picture shows tree line along the sea coast on an island near the equator. As shown, the top of the tree is bent in one direction during the day. Are the trees bent towards the sea or away from it? Explain. [3 MARKS]

In an electrolytic cell, the electrode at which the electrons enter the solution is called the ________. The chemical change that occurs at this electrode is called as _________.

Explain ± ne where n is an integer and e =1.6×10^-19C and what is C

Friction between two surfaces may be reduced by all of the following methods EXCEPT:

Assertion (A): Chrome plating is considered to be toxic. Reason (R): The processes that require chrome plating are usually very toxic.

Can a liquid exert pressure upwards ?

(a) Name two contact forces. (b) Name two non-contact forces.

Which if the following precautions must be followed if a house is built in an earthquake prone zone? [3 MARKS]

During a thunderstorm, stay away from tall objects as lightning takes the ______ path to the ground.

Which of the following statement is true about electrolytes?

What are fluids ? Name two common fluids.

Charges are developed in the clouds because of:

Question 11 A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?

Avinash dives into a swimming pool and reaches its bottom. He experiences a pressure of 1.26 atm of that point. What is the gauge pressure at that point?

The intensity of an earthquake is expressed in terms of magnitude on a scale called:

a)What is pressure? b) Define atmospheric pressure. [3 MARKS]

The time taken by the moon to move ___ of its path of revolution is one asterism.

Answer the following : A. What is the reason for the heat being produced when we rub our hands? B. Where will it require more effort to drag a box - on marble or on concrete road? Why? [5 MARKS]

Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?

In a concave mirror, if the object is placed between focus and centre of curvature then where will the image be formed?

An electric bulb is rated 220V and 100W. Now a car needs replacement for the broken cabin light. This bulb is connected. The battery provides a potential difference of 12V. Why does the bulb glow very dim?

Does a body sinks deeper in liquid of lower density than in a liquid of higher density

A wave is a disturbance created in an elastic medium and it transfers ______.

Write 5 valid points on hearing impairment. [5 MARKS]

If we begin to observe Earth from 1 January 2001, how many revolutions did Earth make around Sun until 1 January 2005?

In the household electric circuit,if one bulb is fused in a room,the other bulbs keep glowing.Explain the reason.

The angle of incidence for a ray incident perpendicular to the mirror is ___.

Which of the following change appreciably when a batsman hits a moving cricket ball? A. Shape B. Direction C.Size D.Speed (a) A and B (b) B and C (c) A and C (d) B and D

In an electrolytic cell, the electrode at which the electrons enter the solution is called the . The chemical change that occurs at this electrode is called as _.