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A body is projected with a velocity u at...

A body is projected with a velocity u at an angle of `60^@` to the horizontal. The time interval after which it will be moving in a direction of `30^@` to the horizontal is

A

`u//(sqrt(3)g)`

B

`(sqrt(3)u)/(g) `

C

`(sqrt(3)u)/(2g)`

D

`(2u)/(sqrt(3)g)`

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The correct Answer is:
A
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