Choose the correct statement :

Options

A. Every oscillatory motion is periodic in nature.
B. Every periodic motion is oscillatory in nature.
C. The motion of a pendulum bob is periodic in nature ( within its small amplitude)
D. Both (a) and ( c)

Answer

D

Explanation

(1) Every oscillatory motion is periodic in nature, i.e, every to and fro motion takes places in equal intervals of time.
(2) Every periodic motion is not oscillatory in nature. For example, the rotation of the earth around the sun is periodicd in nature, but it is not an oscillatory in nature.