Question

A sound wave travels at a speed of 340 m/s. If its wavelength is 2 cm, what is the frequency of the wave? Will it be in the audible range?

Answer 1

Speed of sound v = 340 m/s.; Wavelength λ = 2 cm = 0.02 m. Frequency υ =?

v = uλ  ⇒ u = v / λ  = 340 / 0.02 = 17000 Hz = 17 kHz

The audible range of sound wave is 20 Hz to 20 kHz. 

Hence this is in the audible range.