Question

what is simple pendulum when it is said to complete one oscillation​

Answer 1

Answer:

When a simple pendulum undergoes one complete to and fro movement about its mean position, it is said to complete one oscillation

Answer 2

Answer:

The pendulum is said to have completed one oscillation when its bob,starting from its mean position O, moves to A, to B and back to O. The pendulum also completes one oscillation when its bob moves from one extreme position A to the other extreme position B and comes back to A