Discuss briefly refraction from rarer to denser medium at a concave spherical refracting surface.

Prove that (-mu_1)/(u)+(mu_2)/(v) = (mu_2 - mu_1)/( R) when refraction occurs from rarer to denser medium at a concave spherical refracting surface.

Discuss refraction from denser to rerer medium at a convex spherical refracting surface.

The relation governing refraction of light from rarer to denser medium at a spherical refracting surface is

Spherical surface refraction

Refraction at spherical surfaces

A ray of light is going from rarer to denser medium so that when angle of incidence is 60^(@) reflected and refracted rays are perpendicular to each other.The refractive index of denser medium w.r.t.rarer medium is

Light travels from a rarer medium 1 to a denser medium 2. The angle of incidence and refraction are respectively 45^(@) and 30^(@) . Calculate the refractive index of second medium with respect to the first medium.

When light passes from a denser medium to a rarer medium