Using Huygens principle, show that the angle of incidence is equal to angle of reflection during a plane wave front reflected by a plane surface.

Angle of incidence is equal to the angle of reflection.

Angle of incidence is 15^@ , what is the angle of reflection ?

If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i , the angle of reflection and refraction are respectively r and r', if the reflected and refracted rays are at right angles to each other, the critical angle for the given pair of media is

What is the angle of incidence of a ray if the reflected ray is at an angle of 90^@ to the incident ray ?

A rays of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the later is equal to (3//4)th the angle of prism. The angle of deviation is