If I(1) is the moment of inertia of a th...

If `I_(1)` is the moment of inertia of a thin rod about an axis perpendicular to its length and passing through its centre of mass and `I_(2)` is the moment of inertia (about central axis) of the ring formed by bending the rod, then the ratio of `I_(1)` to `I_(2)` is

`1 : 1`

`pi^(2) : 3`

`pi : 4`

`3 : 5`

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