Question

A source emits sound of frequency 600 Hz inside water
The frequency heard in air will be (velocity of sound in
water = 1500 ms-1, velocity of sound in air = 300ms)​

Answer 1

Explanation:

1. velocity is directly proportional to frequency.
2. velocity in water is directly proportional to frequency given.
3. hence, 1500 is proportional to 600.so for 300m/s 120 is the frequency.
4. but velocity in air is proportional to frequency.
5. hence,300is proportional to 120.