Question

explain snell's law??​

Answer 1

Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

Answer 2

snell's law states that the incident ray and the normal at the point of incidence and the reflected ray all lie in the same plane

for a given pair of media and given colour of light the ratio of the is constant

i.e sin i÷sinr=constant