Assertion (A) Force of friction is smaller in smooth surfaces tha… - Vidyadip

MCQ

Assertion (A) Force of friction is smaller in smooth surfaces than rough surface.
Reason (R) Static friction is greater than the sliding friction.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A
C
A is true but R is false.
D
A is false but R is true.

✓

Answer

B. Force of friction is smaller on smooth surfaces than rough surfaces because on smooth surfaces, the irregularities present are very less as compare to rough surface.

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