Question

Identify "Periodic Motion”?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (C)

In option a the particle has same x-coordinates after an equal interval of time so its periodic If particle was at $x_1$ then after every equal interval T it will again be at $x_1$

Here also the particle repeats its motion. It has the same position after every time period T

This is not true for b and d.

The x coordinates are not same after equal interval of time so motion is not repeating itself