Question

A longitudinal wave travels at a speed of 0.3m/s and the frequency of wave is 20Hz.Find the separation between the two consecutive compressions.

Answer 1

wave velocity = 0.3m/s
frequency= 20Hz

wave velocity= frequency × wavelength
so, wavelength= wave velocity/ frequency
= 0.3/20
lemda= 1.5 × 10^-2 m

hope it helps u

Answer 2

Answer:

Here v=o.3ms-1,n=20Hz

let separation between two consecutive compressions that is wavelength of the wave =1

Using v= n lambda

We have

Lambda =v/n =0.3/20m=1.5×10^-2 =1.5cm