(A) : No work is done by the centripetal force acting on a body moving along the circumference of a circle
(R) : At any instant, the motion of the body is along the tangent to the circle where as the centripetal force is along the radius vector towards the centre of the circle.

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Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’

‘A’ is false and ‘R’ is true

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

‘A’ is true and ‘R’ is false

answer is A.

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Detailed Solution

Centripetal force and displacement are perpendicular to one another through out the motion in circular motion.

So no work is done by centripetal force acting on body.

Hence the correct answer is Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

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