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When the temperature of a rod increases ...

When the temperature of a rod increases from t to `r+Delta t`, its moment of inertia increases from I to `I+Delta I`. If `alpha` is the value of `Delta I//I` is

A

`2alphaDeltat`

B

`alphaDeltat`

C

`(alphaDeltat)/2`

D

`(Deltat)/alpha`

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