# The moment of inertia of a disc about its geometrical axis is I. then its M.I. about its diameter will be Option 1) I Option 2) 2I Option 3) Option 4)

Moment of inertia for system of particle -

- wherein

Applied when masses are placed discretely.

Option 1)

I

Incorrect

Option 2)

2I

Incorrect

Option 3)

correct

Option 4)

Incorrect

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