Question

State the law of reflection of light explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vaccum

Answer 1

Laws of reflection

1. The incident ray ,the normal and the reflected ray all lie in the same plane

2. The angle of incidence is equal angle of reflection

Absolute refractive index

The ratio of velocity of light in vacuum compared to velocity of light in the medium

It can be expressed in mathematically

n = c/v

n is the refractive index of medium , c is the speed of light in air commonly taken as 3*10 ^8 and v is the speed in medium

Hope it helped u

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