Question

define refactive index of a material
​

Answer 1

Answer:

In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as where c is the speed of light in vacuum and v is the phase velocity of light in the medium

Explanation:

please Mark as brainliest

Answer 2

Answer:

In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

Explanation:

hope it helps you

mark me as brainliest