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A wheel of M.I. 0.1" kg m"^(2) is rotati...

A wheel of M.I. `0.1" kg m"^(2)` is rotating at a speed of 1200 rpm. Now it is slowed down uniformly such that it comes to rest after making 314 complete revolution. The magnitude of the retarding torque is

A

`0.4` Nm

B

`0.2` Nm

C

2 Nm

D

4 Nm

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The correct Answer is:
A
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