Assertion : Angle of repose is equal to angle of limiting friction. Reason : When the body is just at the point of motion, the force of friction in this stage is called as limiting friction.

Options

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

Answer

B

Explanation

Angle of repose `(alpha)` = Angle of limiting friction `(theta)`
Angle of repose is defined as the angle of the inclined plane with horizontal such that a body placed on it just begins to slide.