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Two discs have same mass and thickness. ...

Two discs have same mass and thickness. Their materials are of densities `pi_(1)` and `pi_(2)`. The ratio of their moment of inertia about central axis will be

A

`d_(2) : d_(1)`

B

`d_(1) : d_(2)`

C

`d_(1)^(2) : d_(2)^(2)`

D

`d_(2)^(2) : d_(1)^(2)`

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The correct Answer is:
A
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