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From a point on the ground at a distance...

From a point on the ground at a distance 2m from the foot of a vertical wall, a ball is thrown at an angle of `45^@` of which just clears the top, of the wall and afterward strikes the ground at a distance 4m on the other side. The height of the wall is

A

`2//3 m`

B

`3//4 m`

C

`1//2 m`

D

`4//3 m`

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The correct Answer is:
D
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