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A particle moves in a circle with a unif...

A particle moves in a circle with a uniform speed. When it goes from a point A to a diametrically opposite point B, the momentum of the particle changes by `vecP_(A)-vecP_(B)=2` kg m/s `(hatj)` and the centripetal force acting on it changes by `vecF_(A)-vecF_(B)=8N(hati)` where `hati,hatj` are unit vectors along X and Y axes respectively. The angular velocity of the particle is

A

`"8 rad s"^(-1)`

B

`"4 rad s"^(-1)`

C

`"2 rad s"^(-1)`

D

`"16 rad s"^(-1)`

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The correct Answer is:
B
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