A particle is thrown at time t=0 with a ...

A particle is thrown at time `t=0` with a velocity of 10 m/s at an angle of `60^(@)` with the horizontal from a point on an incline plane, making an angle of `30^(@)` with the horizontal. The time when the velocity of the projectile becomes parallel to the incline is :

`2/sqrt(3)` sec

`1/sqrt(3)` sec

`sqrt(3)` sec

`1/(2sqrt(3))` sec

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