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On the application of a constant torque,...

On the application of a constant torque, a wheel is turned from rest to 400 rad in 10 s. If same torque continuous to act, the angular velocity of the wheel after 20 s from the start is

A

`160 " rad s"^(-1)`

B

`150 " rad s"^(-1)`

C

`120 " rad s"^(-1)`

D

`130 " rad s"^(-1)`

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The correct Answer is:
A
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