(i) Why does the sun appear reddish at sun-set or sun- rise ?
(ii) For which colour the refractive index of prism material is maximum and minimum ?

Why does the Sun appear reddish early in the morning?

Name the constituent colour of white light for which the refractive index of glass is maximum.

Which one is maximum in sun?

Name the phenomenon due to which the sun appears reddish at sunset

Name the phenomenon due to which the sun appears reddish at sunset.

How does the deviation produced by a prism depend on (i) the refractive index of its material, and (ii) the wavelength of incident light.

The angle of minimum deviation measured with a prism is 30^(@) and the angle of prism is 60^(@) . The refractive index of prism material is

The angle of minimum deviation produced by a 60^(@) prism is 40^(@) . Calculate the refractive index of the material of the prism.

The correct relation between the refractive index ( mu ) of the material of prism (A) and angle of minimum deviation ( delta ) is

A ray of light is incident on the hypotenuse of a right-angled prism after travelling parallel to the base inside the prism. If mu is the refractive index of the material of the prism, the maximum value of the base angle for which light is totally reflected from the hypotenuse is