Because water is an optically denser material than air, when a light ray travels through air and enters water obliquely, the light beam bends towards the normal.
A ray of light travelling in air enters obliquely into water. Does the ray of light bend towards the normal or away from the normal? Why?
A ray of light travelling in air enters obliquely into water. Does the ray of light bend towards the normal or away from the normal? Why?