Final answer:
As light travels from air to glass, its speed changes and causes the light beam to refract. The wavelength remains constant, but the frequency changes to maintain the relationship between speed, wavelength, and frequency.
Step-by-step explanation:
As a light beam travels from air to glass, its
speed changes. The speed of light in a medium is determined by the refractive index of that medium. The refractive index of glass is greater than the refractive index of air, which means that light travels slower in glass than in air. This change in speed causes the light beam to bend or refract. The
wavelength remains constant while the light travels through different media, but the
frequency changes in order to maintain the relationship between the speed of light, wavelength, and frequency (c = λ * f).
Learn more about Refraction of light