MCQ
Two pendulums with identical bobs and lengths are suspended from a common support such that in rest position the two bobs are in contact (figure). After being displaced by $5^o $ the bob $A$ is released from rest, at $t = 0$ subsequently it collides elastically head-on with the other bob.The graph showing variation in energy of pendulum $A$ with time, for $0 \leqslant t \leqslant T$ (where $T$ is the period of either pendulum).


- A

- ✓

- C

- D

