Question

A sound wave completes one oscillation in 0.01s and moves a distance of 40cm. Find the frequency and velocity of wave.

Answer 1

Dear Student ,
Here in this case from the given data we can write that ,
$$\begin{gathered} Timeperiod=T=0·01s \\ Sothefrequencyis,n=\frac{1}{T}=\frac{1}{0·01}=100Hz \\ Thewavelengthis40cm. \\ Sothevelocityofthewaveis,v=n\lambda =100\times 40=4000cm/s=40m/s \end{gathered}$$
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