STANDARD Physics Centripetal Acceleration Assertion Reason Question
Assertion: Centripetal acceleration is always directed towards the centre of rotation of an object undergoing uniform circular motion. Reason: Centripetal acceleration is a constant vector.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Centripetal acceleration = v²/R. For uniform circular motion, v and R are constant, the magnitude of the centripetal acceleration is constant. But the direction changes—pointing always towards the centre. Therefore, a centripetal acceleration is not a constant vector.
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