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A uniform disc of mass 2 kg is rotated a...

A uniform disc of mass 2 kg is rotated about an axis perpendicular to the plane of the disc. If radius gyration is 50 cm, then the M.I. of the disc about same axis is

A

`0.25 kg m^2`

B

`0.5 kg m^2`

C

`2 kg m^2`

D

`1 kg m^2`

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