Question

A sound wave travels at a speed of $340m/s$. If its wavelength is $2cm$, what is the frequency of the wave? Will it be in the audible range?

Answer 1

Given,

Velocity $V=340m/s$

Wavelength $\lambda =2cm=0.02m$

Frequency $f=?$

We have,

$V=F.\lambda$

$\Rightarrow 340=F\times 0.02$

$F=\frac{340}{0.02}=17,000Hz$

As the audible range is in between $20Hz$ and $20,000Hz$ this sound wave is at audible range.