select the correct answer. a periodic wave travels from one medium to another. which pair of variables are…

select the correct answer. a periodic wave travels from one medium to another. which pair of variables are likely to change in the process? a. velocity and wavelength b. velocity and frequency c. frequency and wavelength d. frequency and phase e. wavelength and phase

select the correct answer. a periodic wave travels from one medium to another. which pair of variables are likely to change in the process? a. velocity and wavelength b. velocity and frequency c. frequency and wavelength d. frequency and phase e. wavelength and phase

Answer

Brief Explanations:

The frequency of a wave is determined by the source and remains constant when the wave moves from one medium to another. The phase is related to the starting - point of the wave and is not directly affected by the change of medium. However, the velocity of a wave changes when it enters a different medium because the properties of the medium (such as density, elasticity) change. According to the wave - speed formula $v = f\lambda$, where $v$ is velocity, $f$ is frequency, and $\lambda$ is wavelength. Since $f$ is constant and $v$ changes, the wavelength $\lambda$ must also change.

Answer:

A. velocity and wavelength