Q.

From a point on the ground at a distance 2 m 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 of 4 m on the other side. The height of the wall is

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a

23m

b

12m

c

43m

d

34m

answer is D.

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Detailed Solution

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y=xtanθ1xR=2(1)126=246=43

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