Question

define refractive index with example . no irrelevant answer ​

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.

Explanation:

Some typical refractive indices for yellow light (wavelength equal to 589 nanometres [10−9 metre]) are the following: air, 1.0003; water, 1.333; crown glass, 1.517; dense flint glass, 1.655; and diamond, 2.417. The variation of refractive index with wavelength is the source of chromatic aberration in lenses.

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Answer 2

Answer:

The ratio of the speed of light in a vaccum to its speed in a specific medium.

Explanation:

n = c/v

where, n is refractive index

c is the velocity of light in vaccum

v is the velocity of light in a substance