A particle is projected at an angle of \( 45^{\circ}, 8 \mathrm{~m} \) away from the foot of a w...

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A particle is projected at an angle of \( 45^{\circ}, 8 \mathrm{~m} \) away from the foot of a wall, just touches the top of the wall and falls on the ground on the opposite side at a distance \( 4 \mathrm{~m} \) from it. The height of wall is :
-(1) \( \frac{2}{3} \mathrm{~m} \)
(2) \( \frac{4}{3} m \)
(3) \( \frac{8}{3} \mathrm{~m} \)
(4) \( \frac{3}{4} \mathrm{~m} \)
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