Assertion : The velovity of a body at the bottom of an inclined plane of given height is more when it slides down the plane compared to when it is rolling down the same oplane.
Reason : In rolling down, a body acruires both kinetic energy of translation and rotation.

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 a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer

B

Explanation

Here, both assertion and reason are true but reason in not correct explanation of Assertion.
When a body slides, its `PE` is converted into `KE` of translation, but when it rolls down, some part of its `PE` is converted into its `KE` o frotation, thereby, reducing its `KE` of translation and hence its linear velocity.