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Introduction

Assertion :In...

Question

Assertion :In retarded motion the displacement and acceleration are in opposite directions. Reason: Acceleration is rate of change of velocity.

A

Both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

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B

Both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

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C

Assertion is true, but the Reason is false.

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D

Assertion is false, but the Reason is true.

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Solution

The correct option is B Both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.
Retarted motion, means acceleration is in direction opposite to displacement.
$a = \frac{c h a n g e i n v e l o c i t y}{t i m e} = \frac{c h a n g e i n d i s p l a c e m e n t}{t i m e^{2}}$

Here, the reason is not satisfying the assertion.

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