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A jet of water with cross section of 6 c...

A jet of water with cross section of `6 cm^(2)` strikes a wall at an angle of `60^(@)` to the normal and rebounds elastically from the wall without losing energy. If the velocity of the water in the jet is `12 m//s`, the force acting on the wall is

A

`2av^(2)rho cos theta`

B

`av rho cos theta`

C

`2 av rho cos theta`

D

`av cos theta`

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The correct Answer is:
A
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