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If the masses of two uniform discs are i...

If the masses of two uniform discs are in the ratio 1: 2 and their diameters are in the ratio 2 : 1, then the ratio of their moments of inertia about the axes passing through their respective centres and perpendicular to their planes will be

A

`1: 1

B

`1:2

C

`2:1

D

`1:4

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