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A stone is projected from a horizontal p...


A stone is projected from a horizontal plane. It attains maximum height `H` & strikes a stationary smooth wall & falls on the ground vertically below the maximum height. Assuming the collision to be elastic the height of the point on the wall where ball will strike is

A

`(H)/(2)`

B

`(H)/(4)`

C

`(3H)/(4)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C

`H=(1)/(2)g(2t)^2=2gt^2`
`h=H-(1)/(2)gt^2`
By (1)&(2)
`h=H-(H)/(4)=(3H)/(4)`
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