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Two discs have the same mass and thickne...

Two discs have the same mass and thickness. Their materials are of densities `d_(1)` and `d_(2)`. The ratio of their M.I about their central axis is

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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A
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