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The ratio of the radii of gyration of a circular disc to that of a circular ring,

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The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axes is

(a) √2 : 1

(b) √2 : √3

(c) √3 : √2

(d) 1 : √2

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1 Answer

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Best answer

Correct option (d) 1 : √2

Explanation:

 M.l. of a circular disc,  Mk2 = M.R2/2

M.I. of a circular ring = MR2

Ratio of their radius of gyration = 1/√2 :1

or 1 : √2 

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