Explain Refraction and Refractive Index
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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.
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Refraction is a bending of light as it passes from one transparent substance into another.Refractive index is a value calculated from the ratio of the speed of light in a vaccum to that in a second time medium of greater density.
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