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A uniform solid sphere A of mass m is ro...

A uniform solid sphere A of mass m is rolling without sliding on a a smooth horizontal surface. It collides elastically and head - on with another stationary hollow sphere B of the same mass and radius. Assuming friction to be absent everywhere, the ratio of the kinetic energy of B to that of A just after the collision is

A

`5:2`

B

`1:1`

C

`2:3`

D

`3:2`

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The correct Answer is:
A
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