Question

define the term refractive index of a medium . can it be less than 1 ?​

Answer 1

Answer:

Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n' in descriptive text and mathematical equations.

Refractive index of a transparent medium is always greater than 1 (it cannot be less than 1) because speed of light in any medium is always less than that in vacuum.

Answer 2

Answer:

attractive index of a transparent medium is always greater than 1 it cannot be less than 1

Please mark me branlist