Question

A periodic wave travels from one medium to another. Which pair of variables are likely to change in the process?Select one of the options below as your answer:A. velocity and wavelengthB. velocity and frequencyC. frequency and wavelengthD. frequency and phaseE. wavelength and phase

Answer 1

I would say velocity and wavelength. The period (frequency) of a wave is what defines it, and this can't change. It is the back and forth movement which causes a wave, so timing is everything. Subsequently, if the wave physically slows, the wavelength must change accordingly (get shorter) to keep the frequency the same.

Answer 2

was that the right answer? @R23