200 waves pass through a point in one second. Calculate the time period of wave.
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Answer
Waves passing through a point in 1 second = 200 We know, frequency $( f )=$ Number of waves passing through point in 1 second. $ \begin{array}{l} \therefore f=200 Hz \\ \quad \text { Also, } T=\frac{1}{f} \\ \therefore \quad \text { Time period }(T)=\frac{1}{200} \\ \quad T=0.005 s \end{array} $
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