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Question

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.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is D Assertion is incorrect but Reason is correct
In rolling relative velocity of the contact point is zero but not necessarily the acceleration. since the relative velocity of the contact point is zero, the friction between the sphere and the horizontal surface is zero, thus, the rolling can be achieved on a smooth horizontal plane.

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