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A ball is projected from the bottom of a...

A ball is projected from the bottom of an inclined plane of inclination `30^@`, with a velocity of `30 ms^(-1)`, at an angle of `30^@` with the inclined plane. If `g = 10 ms^(-2)` , then the range of the ball on given inclined plane is

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The correct Answer is:
5

`AC=1/2xx10xx(1/(sqrt(2)))^(2)=2.5mimpliesAB=5m`
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