A sound wave travels at a speed of 340 m /s. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

It is given that, Velocity (v) of sound = 340 m/s

Wavelength (λ) = 1.5 cm = 0.015 m

We know that, speed = wavelength × frequency

⇒ 340 m/s = 0.015 m × frequency

⇒ Frequency =

= 22666.66 sec^–1

⇒ Frequency = 22666.66 Hz.

Hence the freq. is beyond 20000 Hz so it is not audible.