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A particle is projected up the inclined ...

A particle is projected up the inclined such that its component of velocity along the incline is `10 m//s`. Time of flight is `2` sec and maximum height above the incline is `5m`. Then velocity of projection will be

A

10 m/s

B

`10 sqrt2 m//s`

C

`5 sqrt5 m//s`

D

none of these

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The correct Answer is:
B
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