Question

what is the unit of the refractive index​

Answer 1

Answer:

Explanation:

Refractive index has no units because the refractive index is the ***ratio*** of the speed of light within the material of interest divided by the speed of light in a vacuum, thus the consistent units of measure (meters per second, or kilometers per second, etc.)

Answer 2

Refractive index has no unit because the refractive index is the ratio *** ratio***