When light travels from air into water, how are its velocity, frequency, and wavelength affected?
A. it’s velocity changes, but it’s frequency and wavelength do not change.
B. it’s velocity, wavelength, and frequency all change.
C. it’s frequency changes, but it’s velocity and wavelength do not change.
D. it’s wavelength changes, but it’s velocity and frequency do not change.
W. it’s velocity and wavelength change, but it’s frequency does not change.