Question

15. A source produces sound waves under water. Waves travel through water and then into air. Which of the

following statements about the frequency (f) and wavelength  is correct as sound passes from water to

air?

A) f remains unchanged but  decreases B) f remains unchanged but  increases

C)  remains unchanged but f decreases D)  remains unchanged but f increases​

Answer 1

Answer:

Since sound is travelling from water to aid

Therefore frequency remains constant it depends on the source of sound

Now v=fλ

If v will decrease then λ will also decrease as f is constant.

Answer by Bharat