Find the criical angle for a raay of light going from paraffin oil to air .Given that the refractive index of paraffin oil with repsect to air is 1.44.

The critical angle of light passing from glass to air is minimum for

If refractive index of glass w.r.t. air is 1.55, then what is the refractive index of air w.r.t. glass.

Find the ratio of the powers of a glass lens in water and in air .Given,refractive index of glass =1.50,refractive index of water=1.33.

A beam of unpolarised ligth is incident on a glass-air interface. Showing a suitable ray diagram,that light reflected from the interface is totally polarised,when mu=tan i_B ,Where mu is the refractive index of glass with respect to air and i_B is the Brewster's angle.

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

Consider a ray of light incident from air onto a slab of glass (refractive index n) of width d, at angle theta . The phase difference between the ray reflected by the top surface of the glass and the bottom surface is:

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^@ so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.