1.

An intense stream of water of cross-sectional area A strikes a wall at an angle theta with the normal to the wall returns back elastically. If the density of water is rho and its velocity is v, then the force exerted in the wall will be

Answer»

`2 A V^(2) rho COS theta`
`Av^(2) rho cos theta`
`2 A v^(2) cos theta`
`2 A v rho`

Answer :A


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