Question

Statement 1: Motion of a pendulum clock is oscillatory as well as periodic.
Statement 2: Every oscillatory motion is periodic and vice-versa.

• A. Both statements are correct
• B. Statement 1 is false, statement 2 is correct
• C. Both statements are false
• D. Statement 1 is correct, statement 2 is false

Answer 1

The correct option is D Statement 1 is correct, statement 2 is false

Pendulum clock oscillates to and fro and repeats its motion after a fixed interval of time. So, motion of the pendulum is oscillatory as well as periodic.
All oscillatory motions are periodic because each oscillation gets completed in a definite interval of time. On the other hand, all periodic motions are not oscillatory. Eg: Revolution of the Earth around the Sun is a periodic motion but not an oscillatory motion because the Earth does not undergo to and fro motion but it completes one revolution around the sun in a fixed interval of time.