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A fan is making 600 revolutions per minu...

A fan is making `600` revolutions per minute. If after some time it makes `1200` revolutions per minute, then the increase in its angular velocity is

A

`10 pi rad//sec`

B

`20 pi rad//sec`

C

`40 pi rad//sec`

D

`60 pi rad//sec`

Text Solution

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The correct Answer is:
B
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