Question

what is refractive index of glass slab,water and air

Answer 1

Snell's law, also known as the law of refraction, is a law stating the relationship between the angles of incidence and refraction, when referring to light passing from one medium to another medium such as air to water, glass to air, etc.

Answer 2

glass slab=3*10^8m/s; air=2*10^8m/s; water=2.25*10^8m/s;