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A particle is projected with a velocity ...

A particle is projected with a velocity u from the foot of an inclined plane whose inclination to the horizon is `beta`. It strikes. the plane at right angles if

A

`tan(alpha-beta)= cotbeta`

B

`2tan(alpha-beta)= cotbeta`

C

`2cot(alpha-beta)= cot beta`

D

`None of these

Text Solution

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The correct Answer is:
B
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