Question

5. In periodic motion, the objects repeat itself after
a. same period of time
b. very small period of time
c. large period of time
d. infinite period of time
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Answer 1

Answer:

Motion of a object which repeats itself after a certain period of time is called periodic motion. For example : Motion of Earth around the sun is periodic as well as circular as it repeats it motion after time of 365 days. Motion of simple pendulum is periodic.

Explanation:

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Answer 2

the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.