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?
Given that, speed of sound, v = 340 m/s
Wavelength, $\lambda $ = 1.5 cm = 1.5/100 m.-Frequency, V = ?
Using the formulae , v = V$\lambda $
V = v / $\lambda $ = 340 / (1.5/100) = 340 x 100/1.5 = 22666.6 Hz
We know that, audible range of frequencies is 20 Hz to 20000 Hz.
So, the given frequency (i.e. 22666.6 Hz) is not audible.