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A solid shere is rotating with an angula...

A solid shere is rotating with an angular velocity `omega`. It is of moment is inertia l about its diametrical axis and is of linear expansion coefficient `alpha`. When temperature is increased by `DeltaT`, the fractional change in its angular velocity is

A

`2alphaDeltaT`

B

`alphaDeltaT`

C

`(alphaDeltaT)/(2)`

D

`(2alphaDeltaT)/(5)`

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The correct Answer is:
A
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