The angle between the normal and incident ray is known as ______.

A ray of light incident on a medium at polarising angle.what will be the angle between the reflected and the refracted rays? Or, an unpolarised ray of light is incident on a rectangular glass block at Brewster's angle. What will be the angle between the reflected and the refracted rays?

A ray of light from air is incident on a sphere of refractive index sqrt(3) . If the angle of incidence is 60^(@) , calculate the angle between the incident ray and the emergent ray with the help of a diagram.

A ray of light travelling through a denser medium is incident at an angle I in a rarer medium. If the angle between the reflected ray and refracted ray is 90^(@) , show that the critical angle of the two media, theta_(c) = sin^(-1) (tan i)

A ray of lilght is incident at a small angle theta on a rectangular glass slab of thickness t. IF the refractive index of glass is mu show that the perpendicular distance between the emergent ray from the slab and the incident ray is theta t (mu-1)//mu

An unpolarised light is incident at angle of polarisation on a reflector. Determine the angle between the reflected and the transmitted rays.

A ray of light enters a rectangular glass block and is incident on the lower face of the block. Angle of incidence is 30^(@) . Part of the ray is reflected inside it and the rest emerges out of the block. Refractive index of glass is 1.5. What is the angle between the emergent ray and the reflected ray? [sin 48^(@) = 0.75]

Find the deviation produced by reflection at a plane mirror when the angle between the incident and reflected' rays is 80?