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

Physics - Laws of Motion

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


7.
Kinetic friction is always:
A.
Equal to limiting friction
B.
More than limiting friction
C.
Less than limiting friction
D.
Independent of velocity
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ANSWER :
C. Less than limiting friction
8.
What is the SI unit of the coefficient of friction?
A.
Newton
B.
kg·m/s²
C.
No unit (dimensionless)
D.
Joule
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ANSWER :
C. No unit (dimensionless)
9.
What type of friction is present in rolling objects?
A.
Static friction
B.
Kinetic friction
C.
Rolling friction
D.
Viscous friction
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ANSWER :
C. Rolling friction
10.
Why is rolling friction less than sliding friction?
A.
Less area of contact
B.
More weight distribution
C.
More interlocking of surfaces
D.
High velocity
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ANSWER :
A. Less area of contact
11.
The force of friction depends on:
A.
Area of contact
B.
Nature of surfaces in contact
C.
Both A and B
D.
None
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ANSWER :
B. Nature of surfaces in contact
12.
A car moving on a road experiences which type of friction?
A.
Static friction
B.
Kinetic friction
C.
Rolling friction
D.
Fluid friction
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ANSWER :
C. Rolling friction