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If a uniform solid sphere of radius R an...

If a uniform solid sphere of radius R and mass m rotates about a tangent and has moment of inertia `42 kg m^2`, then the moment of inertia of a solid sphere about an axis passing through its centre and perpendicular to its plane will be

A

`12 kg m^2`

B

`18 kg m^2`

C

`300 kg m^2`

D

`24 kg m^2`

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