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A particle is projected an angle of 45^(...

A particle is projected an angle of `45^(@)` from 8m before the foot of a wall, just touches the top of the wall and falls on the ground on the opposite side at a distance 4m from it. The height of wall is:-

A

`(2)/(3)m`

B

`(4)/(3)m`

C

`(8)/(3)m`

D

`(3)/(4)m`

Text Solution

Verified by Experts

The correct Answer is:
C

`R=8+4=12m`
`y=(x tan theta)[1-(X)/(R)]=8xx1xx[1-(8)/(12)]=(8)/(3)m`
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