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A bob of mass M is suspended by a massle...

A bob of mass M is suspended by a massless string of length L. The horizontal velocity v at position A is just sufficient to make it reach the point B. The angle `theta` at which the speed of the bob is half of that at A, satisfies

A

`theta=(pi)/(4)`

B

`(pi)/(4) lt theta lt (pi)/(2)`

C

`(pi)/(2) lt theta lt (3pi)/(4)`

D

`(3pi)/(4) lt theta lt pi`

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The correct Answer is:
C
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