Give the laws of refraction. Show that emergent ray from a glass slab is parallel to incident ray.

Discuss refraction through a glass slab and show that emergent ray is parallel to incident ray but displaced?

A ray of light passes through four transparent media with refractive indices mu_(1),mu_(2),mu_(3), and mu_(4) as shown in figure. The surfaces of all media are paralle. If the emerent ray CD is parallel to the incident ray AB, we must have

A ray of white light shows no dispersion on emerging from a glas plate(slab).Is there no dispersion inside the glass plate as well?

A right angled isosceles glass prism is made from glass of refractive index 1.5.Show that a ray of light incident normally on the hypotneuse of this prism is deviated through 180^@ .

A right angled isosceles glass prism is made from glass of refractive index 1.5.Show that a ray of light incident normally on one of the equal sides of this prism is deviated through 90^@ .

What is the angle of incidence of a ray if the reflected ray is at an angle of 90^@ to the incident ray ?

What is the angle of incidence of a ray if the reflected ray is at an angle of 90^@ to the incident ray?