Write laws of refraction. Explain the same with the help of ray diagram, when a ray of light passes through a rectangular glass slab.

Explain the laws of refraction with the help of ray diagram.

Refraction of light passing through a glass slab.

Draw diagram showing that the refraction of a light ray through a glass slab.

The angle of deviation of a ray of light refracted through a parallel glass slab is

Draw a ray diagram to show the angle of deviation when a ray of light passes through a glass prsim.

Show that for refraction of light through a parallel glass slab, the incident ray and the emergent ray are parallel to each other. Or, With the help of a diagram show how in case of a rectangular glass slab, when light is refracted by the two parallel faces of the slab, deviation between angle of incidence and angle of refractive is zero.