Assertion: Friction is a self adjusting force
Reason: Friction does not depend upon mass of the body

Options

A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false
D. If both Assertion and Reason are false

Answer

C

Explanation

Force of static friction is equal and opposite to applied force, so static friction is a self adjusting force. Frictional force `=mu mg` i.e, friction depends on mass.