Question

A sound wave enters a new medium where sound travels faster. How does this affect the frequency and wavelength of the sound?
The frequency increases and the wavelength decreases.
The frequency decreases and the wavelength increases.
The frequency stays the same and the wavelength increases.
The frequency stays the same and the wavelength decreases.
Neither the frequency nor the wavelength is affected.

Answer 1

Frequency will depend on the source, not the medium, when source and observer are stationary.

(frequency) (wavelength) = velocity

You are ready to roll.