Friction (Static, Kinetic, Rolling and Laws of Friction) NEET Questions

Physics - Laws of Motion

Friction (Static, Kinetic, Rolling and Laws of Friction) MCQ Questions


1.
Friction is a type of:
A.
Conservative force
B.
Non-conservative force
C.
Internal force
D.
Virtual force
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ANSWER :
B. Non-conservative force
2.
Which friction acts when a body is at rest?
A.
Static friction
B.
Kinetic friction
C.
Rolling friction
D.
Fluid friction
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ANSWER :
A. Static friction
3.
Which force opposes the motion of a body in contact with a surface?
A.
Gravitational force
B.
Normal force
C.
Frictional force
D.
Magnetic force
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ANSWER :
C. Frictional force
4.
What is the maximum value of static friction called?
A.
Rolling friction
B.
Kinetic friction
C.
Limiting friction
D.
Dynamic friction
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ANSWER :
C. Limiting friction
5.
Which one of the following statements is incorrect?

NEET - 2016

A.
Rolling friction is smaller than sliding friction.
B.
The limiting value of static friction is directly proportional to the normal reaction.
C.
Frictional force opposes the relative motion.
D.
The coefficient of sliding friction has dimensions of length.
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ANSWER :
D. The coefficient of sliding friction has dimensions of length.
6.
The force of kinetic friction is:
A.
Always less than static friction
B.
Always more than static friction
C.
Equal to static friction
D.
Zero
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ANSWER :
A. Always less than static friction