Question

Changes that repeat themselves after a regular interval of time are:

• A. Slow changes
• B. Periodic changes
• C. Fast changes
• D. Non-periodic changes

Answer 1

The correct option is B Periodic changes

Periodic changes are changes which have a fixed period of repeating itself, i.e. after every one period the change will occur again. For example movement of the hour hand in a clock, or a swinging pendulum.