What is the critical anle for a ray going from glass into water?The refractive indices of glass and water are 1.62 and 1.32 respectivley.

Find the critical angle for a glass-water interface,if refractive index of glass 3//2 and that of water is 4//3 .

What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5.)

White light is pased through a glass prism of angle 5^@ .If the refractive indices for red and blue colours are 1.641 adn 1.659 respectively ,calculate the angle of disperson betwen these colours.

Two monochromatic rays of light are incident normally on the face AB of an isosceles right-angled prism ABC.The refractive indices of the glass prism for the two rays 1 and 2 are respectively 1.35 and 1.45[Fig.2.76]Trace the path of these rays after entering through the prism .

Find the angle of dispersion between the red and violet colours produced by a flint glass prism of refracting angle 60^@ .Refrative indices of the prism for red and violet colours are 1.622 and 1.663 respectively.

Refractive index of glass is 1.5 find critical angle for glass.

The refractive indices of the crown glass for blue and red light are 1.51 and 1.49 respectively and those of the flint glass are 1.77 and 1.73 respectively.An isosceles prism of angle 6^@ is made of crown glass.A beam of white light is incident at a small angle on this prism .The other flint glass isosceles prism is combined with the crown glass prism such that there is no deviation of teh incident light.Determine the angle of the flint glass prism.Calculate the net dispersion of the combined system.