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The second's hand of a watch has length ...

The second's hand of a watch has length 6 cm. Speed of end point and magnitude of difference of velocities at two perpendicular positions will be

A

`2 pi` and zero

B

`2 sqrt(2) pi and 2pi "mm/s"`

C

`2 sqrt(2) pi and 2pi "mm/s"`

D

`2 pi and 2 sqrt(2)pi "mm/s"`

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The correct Answer is:
D
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