Question

The distance between compression and next rarefaction of sound wave in 12.5 cm. If the sound waves can travel 750 m in 3 sec, the find the number of waves produced in one second. Meritanation

Answer 1

Speed = 750 m/ 3 s = 150 m/s

If one wavelength = 12.5 cm

Then by the formula,

Speed = Wavelength * Frequency

=> 15000 = 12.5 * F

=> F = 15000/12.5 = 1200 Hz