what is the value of absolute refractive index of a medium? why is it so?
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Explanation:
When the refractive index of a medium is considered with respect to the speed of light in air or vacuum, it is defined as the absolute refractive index of that particular medium.
For example:
When we say that the refractive index of water is 1.33, We mean that the ratio of the speed of light in air to that of water is equal to 1.33. The speed of light in air /Speed of light in water = 1.33.
Absolute refractive index is the refractive index of a medium in vacuum. More specifically, it is the ratio of the spped of light in vacuum to the speed of light in that medium. It is always greater than one .
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