Question

what is refraction state laws of refraction explain refractive index

Answer 1

The phenomenon of bending of light is called as refrection.
Laws.
1.refraction happens in one plane only.
2.sine of incidence upon sine of refraction is always constant
Refractive Index.
Light bending capacity of a medium is called refractive index.

Hope it helps that

Answer 2

When a light ray passes from one transparent medium to another transparent medium its velocity changes due to which is Path gets deviated from original medium on the surface separating two media this phenomena is called refraction of light.

LAWS OF REFRACTION
-the incident ray the reflected ray and the normal drawn at the point of incidence all line the same plane
-the ratio of sine of angle of incidence to the ratio of sine of angle of reflection is constant in any situation this phenomena is known as snell's law of refraction