Question

what is reflective index ​

Answer 1

Answer:

Refractive index, also called index of refraction, measure of the bending of a ray of light when passing from one medium into another. ... 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

Explanation:

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how fast light travels through the material. It is defined as

{\displaystyle n={\frac {c}{v}},}n={\frac {c}{v}},

where c is the speed of light in vacuum and v is the phase velocity of light in the medium. For example, the refractive index of water is 1.333, meaning that light travels 1/1.333 times as fast in vacuum as in water. Increasing refractive index corresponds to decreasing speed of light in the material.

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