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when the temperature of a body increses ...

when the temperature of a body increses from t to `t +Deltat`,its moment of inertia increases form I to ` I + DeltaI`. The coefficient of linear expanison of the body is `prop`. The ratio`(DeltaI)/I` is equal to

A

`(Deltat)/(t)`

B

`(2Deltat)/(t)`

C

`alpha Deltat`

D

`2alpha Deltat`

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