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The frequency of a wave decreases when its period increases.

The frequency (f) of a wave is the number of cycles (or vibrations or oscillations) per unit time.

The SI units of frequency is the inverse seconds or hertz (Hz).

The period (T) of a wave is the time it takes to complete a cycle.

The frequency and period have the following relationship:

frequency= 1/period

f= 1/T

so if the period increases, the frequency decreases.

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Q: How the frenquency of a wave changes when a period of the wave increases?
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