Question

Assertion: If the head of a right handed screw rotates with the body, the screw advances in the direction of the angular velocty.
Reason: For rotation about a fixed axis, the angular velocity vector lies along the axis of rotation.
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 the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer 1

Correct Answer - a
If the sense of rotation of the body changes i.e., clockwise or anti-clockwise so does the direction of angular velocity.