Question

Two sound waves of wavelength 1.34 m and 1.36 m produces 4 beats per second. Calculate the velocity of sound in the medium.

Answer 1

Let v be the velocity of sound in the given medium. Then Frequency of the first wave

Frequency of the second wave

Velocity of sound v = (4 x 1.34 x 1.36/0.02)

= 364.5 ms^-1.