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Question

A ball of mass 0.1 Kg. is whirled in a horizontal circle of radius 1 m. by means of a string at an initial speed of 10 R.P.M. Keeping the radius constant, the tension in the string is reduced to one quarter of its initial value. The new speed is


A

5 r.p.m.

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B

10 r.p.m.

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C

20 r.p.m.

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D

14 r.p.m.

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