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A constant torque acting on a uniform ci...

A constant torque acting on a uniform circular wheel changes its angular momentum from A to 4 A in 4S. The torque acted on it is

A

`(3A)/(4)`

B

`(A)/(4)`

C

`(2A)/(3)`

D

`(3A)/(2)`

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The correct Answer is:
A
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