In the figure shown , for an angle of incidence `45^(@)`, at the top surface , what is the minimum refractive index needed for the internal reflection at vertical face ?

The angle of incidence on the surface of a diamond of refractive index 2.4, if the angle between the reflected and refracted rays is 90° is

A prism is shown in the figure with prism angle 75^(@) and refractive index sqrt(3) . A light ray incidents on a surface at incident angle theta . Other face is coated with a medium of refractive index n. for theta le 60^(@) ray suffers total internal reflection find value of n^(2) .

For a situation shown in figure, find the refrective index of glass so that it will suffer total internal reflection at the vertical surface.

For a situation shown in figure, find the refrective index of glass so that it will suffer total internal reflection at the vertical surface.

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 prism is 1.524.

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 prism is 1.524.

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.