Question

ii) When sound waves travel from air to water.
which of these remains constant ?
(D
)​

Answer 1

Answer:

Let me begin by saying what doesn’t remain constant: speed (as well as wavelength). The speed of sound is always determined by the medium, but frequency isn’t. Frequency is determined by the source. It doesn’t change. Because the frequency remains constant and the speed increases, the wavelength has to increase as well.