Question

A sound of wavelength 3cm travels through water at a speed of 1500m/s. Will the sound be heard by us and why? *

Answer 1

given the wave length of sound = 3cm = 0.03 m

velocity of sound in water= 1500 m/s

so the frequency of the wave = velocity/ wave length = 1500/0.03=50000 Hz

but the frequency of sound to be audible by human ear should be with in 20Hz - 20000 Hz.

Hence the sound will not be heard by us.