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[" D-4.On an inclined plane of inclinati...

[" D-4.On an inclined plane of inclination "30^(@),a" ball is thrown at an angle of "60^(@)" with the horizontal from the "],[" foot of the incline with a velocity of "10sqrt(3)ms^(-1)" .If "g=10ms^(-2)" ,then the time in which ball will hit the "],[" inclined plane is - "],[[" (A) "1sec" ."," (B) "6" sec."," (C) "2" sec."," (D) "4sec" ."]]

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