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A particle is projected with a certain v...

A particle is projected with a certain velocity at an angle `alpha` above the horizontal from the foot of an inclined plane of inclination `30^(@)`. If the particle strikes the plane normally then `alpha` is equal to

A

`30^(@)+"tan"^(-1)((sqrt(3))/2)`

B

`45^(@)`

C

`60^(@)`

D

`30^(@)+tan^(-1)(2sqrt(3))`

Text Solution

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The correct Answer is:
A
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