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A solid sphere is released from rest fro...

A solid sphere is released from rest from the top of a curved surface as shown in figure. Half portion of surface is rough and another half is smooth. If sphere is released from rough side, then the maximum height attained by it on smooth side is (Rough surface has sufficient friction to roll the body)

A

`(3h)/7`

B

h

C

`(2h)/7`

D

`(5h)/7`

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