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A mass 2 kg is whirled in a horizontal c...

A mass 2 kg is whirled in a horizontal circle by means of a string at an initial speed of 5 revolutions per minute . Keeping the radius constant the tension in the string is doubled. The new speed is nearly

A

`5/(sqrt(2))` rev/min

B

`10` rev/min

C

`10sqrt(2)`rev/min

D

`5sqrt(2)`rev/min

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The correct Answer is:
D
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