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

2n & 0 mm/s

B

`2 sqrt(2) n & 4.44` mm/s

C

`2 sqrt(2) n & 2` n mm/s

D

`2 n & 2 sqrt(2)` n mm/s

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