Question

A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in air it is 300 m/s. The frequency of sound recorded by an observer who is standing in air is?

Answer 1

Frequency of sound waves depends on source of sound, not on the medium of propagation. So, the frequency of sound waves remains the same in air as well as water i.e. 600 Hz.