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UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

If a bomb dropped from an aeroplane explodes in midair_____.

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Important Questions on Physics

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 108
Which of the following statements is correct, when a person walks on a rough surface?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 109
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts _____.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 110
To avoid slipping while walking on ice, one should take smaller steps because of the _____.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 111
Consider the following statements
1. The force of friction acts in a direction opposite to the applied force.
2. Rolling friction is greater than sliding friction.
3. Work done by a frictional force may be negative, positive or zero.
Which of the statement (s) is/ are true?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 112
Consider the following statements
1. The maximum static frictional force is equal to the area of the surface in contact
2. The maximum static frictional force is independent of the area of the surface in contact
3. The limiting friction is always greater than the dynamic friction.
4. The coefficient of friction between two surfaces increases as the surface in contact is made rough.
Which of the statement(s) is/are not true?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 113
Consider the following statements
  1. Friction is a non-conservative force which always opposes the motion of a body over the other.
  2. The usual methods of reducing friction are polishing of surfaces, lubrication with oil or grease, use of ball bearings etc.
  3. Friction due to air is considerably reduced by streamlining the shape of the body.
  4. Friction depends upon the nature of the material of surfaces in contact.

Which of the statement(s) is/are correct?

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 114
When a body is lying on a rough inclined plane and does not move, the force of friction
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 9 - Physics>Exercise 1>Q 115
Angle of friction and angle of repose are