A sound wave travels at a speed of 339 ms⁻¹. If its wavelength is 1.5 cm. What is the frequency of the wave?

Velocity of sound wave v = 339 ms⁻¹;
Wavelength of the wave λ = 1.5 cm = 0.015 m
∴ Frequency of the wave ν = v/λ = 339/0.015 = 22600 Hz = 22.6 kHz
Audible frequency range for human ear lies between 20 Hz to 20 kHz
Thus this wave is not audible.