Question

State the law of reflaection of light .explain the term Absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum

Answer 1

Law of reflection:

1. Angle of incidence = Angle of reflection

2. Normal, incident ray, reflected ray are co-plane at the point of incidence.

Absolute refractive index is the refractive index of a medium with respect to air.

Refractive index=c/v

where c is the speed of light in air/vaccum

v is the speed of light in the medium.