Question

Define refraction of light. State Snell's law of

refractive of light.​

Answer 1

The phenomenon of change in teh direction of light from one medium to another medium is called refraction of light.

Snells law:

The ratio of sin of angle of incidence to the ratio of angle of angle of refraction is a constant

Sin i/Sin r= constant

Answer 2

the change in the direction of propogation of light when it passes obliquely from one transparent medium to another is called reflection of light

sin i/sin r=constant=n

n is called the refractive index of the second medium with respect to the first medium. this second law is called snell's law