Question

Which of the following is a periodic change?
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Answer 1

Answer:

Periodic changes are changes which occur periodically or at regular intervals Example: Change of seasons. Day and night, changing phases of the moon, beating of heart, clock striking an hour are all examples of periodic motion whereas waterbecoming ice, burning of matchstick etc are non periodic changes.

Answer 2

Following he nahi par jaise earth ka rotation etc is periodic change