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The ratio of the radii of gyration of a ...

The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and a circular ring of the same radius about a tengential axis in the plane of the ring is

A

`sqrt(5)/(6)`

B

`sqrt(5)/(3)`

C

1

D

`2/3`

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The correct Answer is:
A
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