Define absolute refractive index. Mention its unit. Can the value of absolute refractive index be smaller than 1? Justify your answer
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Define absolute refractive index. Mention its unit. Can the value of absolute refractive index be smaller than 1? Justify your answer
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No, the absolute refractive index of a medium can not be less than one because speed of light in any medium is always less than that in vacuum.
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