Question

Pick the correct option for the following statements:​

Statement 1: Motion of a pendulum clock is periodic as well as oscillatory.​

Statement 2: Every periodic motion is oscillatory and vice-versa.​

• A. Statement 1 is true but statement 2 is false​
• B. Statement 1 is false but statement 2 is true​
• C. Both statements are true​
• D. Both statements are false​

Answer 1

The correct option is A Statement 1 is true but statement 2 is false​

The pendulum of a clock shows to and fro as well as motion which repeats itself after a regular interval of time. Thus, it follows periodic as well as oscillatory motion.
All oscillatory motions are periodic because an oscillatory motion repeats itself after a regular interval of time.
But, all periodic motions are not necessarily oscillatory. For example, the motion of planets around the Sun is periodic. But the motion is not to and fro about its mean position. Hence, the motion of planets around the Sun is not oscillatory.