Snell's law :
Snell’s law tells us the degree of refraction and relation between the angle of incidence, the angle of refraction and refractive indices of given pair of media.
Snell’s law is defined as “The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given colour and for the given pair of media”.
snell's law is formulated as:
n1 Sin i = n2 sin r
n1 is refractive index of medium 1
n2 is refractive index of medium 2
i is the angle of incidence
r is the angle of refraction
For calculation lets consider
value of n1 is x, value of n2 is y
