A ray of light undergoes ……… on passing through a prism.

How many refractions does a ray of light undergo on passing through a glass slab? What is the net deviation of the ray ?

For a light ray passing through a prism

For a light ray passing through a given prism

Why does a ray of light while passing through a prism, bend towards its base?

Plot a graph to show the variation of the angle of deviation as a function of angle of incidence for light rays passing through a prism.