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Amplitude, Frequency and Time Period

Find the time...

Question

Find the time period of a source of a sound wave whose frequency is $400 H z$ .

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Solution

Given,
Frequency $= 400 H z$
Time period $= \frac{1}{f r e q u e n c y}$
$= \frac{1}{400} = 0.0025 S e c o n d$

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