Question

define refractive index ? ​

Answer 1

The ratio of the velocity of light in vacuum to its velocity in a specified medium

PLZ MARK AS BRAINLIEST

Answer 2

$anneyoung \: haseyo$

Refractive index:

➡The ratio of the speed of light in vacuum to its velocity in a specified medium.

➡The refractive index gives an indication of the light bending ability of that medium.

➡ sin i/sin r=constant(refractive index)