In the figure, pendulum bob on left side is pulled a side to a height h from its initial position. After it is released it collides with the right pendulum bob at rest, which is of the same mass. After the collision the two bobs stick together and raise to a height :-

Options

A. `3h/4`
B. `2h/3`
C. `h/2`
D. `h/4`

Answer

`(4)`

Explanation

For collision L.C.M
`msqrt2gh + 0 = (m+ m)v`
Law of conservation of energy
`1/2[m+ m]v^(2) = (m + m) gh^(1)`