The angular displacement(theta) of the b...

The angular displacement(`theta`) of the blades of a ceiling fan, when the fan is switched on at `t=0`, is shown in figure. The average angular velocity of the fan blades during the first `8` seconds will be

A

`40pi rad//s`

B

`20pi rad//s`

C

`10pi rad//s`

D

`5pi rad//s`

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A

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