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A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following wil not be affected?

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A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following wil not be affected?
A. Rotational kinetic energy
B. Moment of inertia
C. Angular velocity
D. Angular momentum
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Correct Answer - D
`tau_(ex)=0`
So, `(dL)/(dt)=0`
i.e., L=constant
So angular momentum remains constant .
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