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When an object is shot from the bottom o...

When an object is shot from the bottom of a long smooth inclined plane kept at an angle `60^(@)` with horizontal, it can travel a distance `x_(1)` along the plane. But when the inclination is decreased to `30^(@)` and the same object is shot with the same velocity, it can travel `x_(2)` distance. Then `x_(1):x_(2)` will be :

A

`1 : 2sqrt3`

B

`1 :sqrt2`

C

`sqrt2:1`

D

`1:sqrt3`

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