TS EAMCET Medical 11 May 2023 Shift 1 Paper

The bob P of a simple pendulum of length L released from 60∘ to the vertical hits the bob Q of another pendulum of same length which is at rest on a smooth table top as shown in figure. If the masses of P and Q are same and collision is elastic, then the height to which the bob Q rises after collision is
(neglect the sizes of the bobs)