Refraction of Light — Chapter Summary

Refraction is the phenomenon in

Refraction is the phenomenon in which light changes speed and, in the case of oblique incidence, changes direction when it passes from one medium to a

The first law states that

The first law states that the incident ray, refracted ray, and the normal at the point of incidence lie in the same plane. The second law states that

Refractive index is the ratio

Refractive index is the ratio of sine of angle of incidence to sine of angle of refraction for a pair of media. It can also be written as the ratio of

Speed of light changes during refraction

Speed of light changes during refraction. Direction changes only for oblique incidence, not for normal incidence. Wavelength decreases when light goes

Refractive index increases when density increases

Refractive index increases when density increases. It decreases when temperature increases. It also increases when wavelength decreases, so violet lig