Question

formula for absolute refractive index of a medium ( in terms of symbols and words)​

Answer 1

Answer:

$<bullet> Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.$

Answer 2

ᴀɴsᴡᴇʀ

The refractive of a material is a dimensionless number that describes how fast light travels through the material.

n=c/v

where c is the speed of light in vacuum and v is the phase velocity of light in the medium.