Assertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero.Reason : A solid sphere can roll on the smooth surface.

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If both assertion and reason are true and reason is a true 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.

answer is D.

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Detailed Solution

During rolling motion, there is radial acceleration towards the centre.A solid sphere cannot roll on smooth surface hence reason is false.

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