What happens to a ray of light when it goes from air to water at an angle.

When a ray of light enters water from air it is noticed
that the ray does not continue in a straight line. Instead it gets bent with the
relation between the angle of incidence of the beam and the angle of refraction of the
beam being the same. The relation of the two angles in terms of the refractive indexes
of the mediums is given by the Snell's Law as:

sin Ai / sin
Ar = Nw / Na, where Ai is the angle of incidence, Ar is the angle of refraction, Nw is
the refractive index of water and Na is the refractive index of
air.

The refractive index of water is approximately 1.333
and that of air is approximately 1. Using the formula given the angle of incidence is
more than the angle of refraction.