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A body is projected with velocity v1from...

A body is projected with velocity `v_1`from the point P as shown in the figure. At the same time, another body is projected vertically upwards from Q with velocity `v_2` . The point Q lies vertically below the highest point. For both the bodies to collide, `v^2/v_1` should be

A

`sqrt 3/2`

B

`1/sqrt2`

C

`sqrt 5/3`

D

`7/2`

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