Question

Snell's law is given by the formula ​

Answer 1

Snell's law states that : The ratio of Sine of angle of incidence to the Sine of angle of refraction is a constant, for the light of a given colour and for the given pair of media.

formula-

$\frac{n1}{n2} = \frac{sin \: r \: }{sin \: i}$