Question

1. Observe the following figure:
The time period of a simple pendulum is the time taken by it to travel from.
b) O to A, A to B and B. to A
a) A to B and back to A
c) B to A, A to B and B to O
d) A to B
​

Answer 1

Answer:

This answer should be a) A to B and back to A .

Answer 2

Answer:

The correct answer is A to B and back to A.

Explanation:

The time period of oscillation of a wave is defined as the time taken by any element  from one extreme position to another and then coming back to the same initial position.

Therefore A & B are the two extreme position. Hence the time period of simple pendulum is the time taken by it to travel from A to B and back to A.