Question

Two small particles of equal masses stant moving in opposite direction from a point `A` in a burtizonetal circule orbic their tangention velocity are `V` and `2V` , respectively as shown in the figure between collsions , the particals move with constant speed After making how many elastic collition , other the then that at `A` these two partical will again reach the point `A` ?

A. `4`
B. `3`
C. `2`
D. `1`

Answer 1

Correct Answer - C

The first collision takes place at `A_(1)` as the particle moving in anticlockwise sense covers half the distance covered by other. They exchange velocities and the second collisions takes place at `A_(2)`. The third collision takes place at `A`. So, option (C ) is correct.