Question

A longitudinal wave travels at a speed of $0.3m{s}^{-1}$ and the frequency of wave is $20Hz$. Find the separation between the two consecutive compressions.

Answer 1

wave velocity$=0.3m/sec$

frequency$=20Hz$

as we know

wave velocity$=frequency\times wavelength\therefore \lambda =\frac{v}{f}=\frac{0.3}{20}=1.5\times {10}^{-2}m$.