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A clock has its second hand 2.0 cm long....

A clock has its second hand `2.0 cm` long. Find the average speed and modulus of average velocity of the tip of the second hand in `15 s`.

A

`(pi)/(10)cm //s`

B

`(pi)/(20)cm//s`

C

`(pi)/(30)cm//s`

D

`(pi)/(5)cm//s`

Text Solution

Verified by Experts

The correct Answer is:
C
`V=r omega = r. (2pi)/( T) = 1 xx (2pi )/(60) =(pi)/(30)`
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