Question

state law of refraction of light that define the refractive index of a medium with respect to the other express it mathematically. how is refractive index of a medium A with respect to a medium B related to the speed of light in two when one medium A and B ? State the name of this constant when one medium is vaccum or air​

Answer 1

The second law of refraction is also known as Snell's law of refraction and it states that the ratio of Sine of the angle of incidence to the sine of refraction is constant for a given pair of media. It establishes a relation between angle of incidence and angle of refraction.

It can be expressed mathematically as follows

n nis constant and is known as refractive index.

The refractive index of any medium 'A' with respect to a medium 'B' related to the speed of propagation of light in two media A and B can be written as follows in the picture

Where, Vp is the speed of light in medium 'B' and VA is the speed of light in medium 'A'

B'A is the refractive index of medium 'A' with respect to medium 'B'

When one medium is vacuum or air and light is going to another medium, then the constant is known as absolute refractive index.