BEHAVIOUR OF WAVEFRONTS IN PRISMS, LENSES AND MIRROR

Assertion:- Images formed by TIR (Total internal reflection) are much brighter than formed by mirrors or lenses. Reason:- IN TIR, there is no loss of intensity while in case of reflection from mirrors or refraction from plane surfaces or lenses there is some loss of intensity as all light can never be reflected or refracted.

Power and Combination OF Lenses and Mirrors

Combination OF Lenses /Mirror|| Identification OF Lens/Image Nature

In Fresnel's diffraction, wavefront must be

Reflection of light: Mirror :: _____ : Prism

A wavefront and a ray of light are