Which is responsible for dispersion of light reflection of refraction ?

What is dispersion of light?

Explain dispersion of white light.

What is dispersion of white light ?

Explain reflection and refraction of waves.

What is refraction of light ? Explain laws of refraction.

What is dispersion of white light?

What is reflection of light ? Explain laws of reflection

A ray light of intensity I is incident on a parallel glass-slab at a point A as shown in figure it undergoes partial reflection and refraction. At each reflection 25% of incident energy is refracted rays AB and A'B' undergo interference find the ratio I_(max)//I_(min)

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.

A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). The reflected and refracted rays make as angle of 90degrees with each other. The angles of reflection and refraction are r and r The critical angle is