explain the term absolute refractive index of a medium and write the expression to relate it with the speed of light in vaccum
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absolute refractive index is when the speed of light in an object is compared to that of the speed of light in air. speed of light in air is almost equal to speed of light in vaccum so we can also state that absolute refractive index is when the speed of light in an object is compared to that of the speed of light in vaccum . hope u like it
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