can the absolute value of refractive index of a medium be less than unity?
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yeah absolute value of refractive index of medium can be less than unity
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No, it cannot.
The formula for absolute refractive index is c/v, where c is the speed of light in vacuum or air and v is the velocity of light in other media.
Since the velocity of light in vacuum is considered to be maximum, the speed of light cannot be greater than c in any medium.
So c/v will always be greater than or equal to 1, as c>v.
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Here's your answer...
No, it cannot.
The formula for absolute refractive index is c/v, where c is the speed of light in vacuum or air and v is the velocity of light in other media.
Since the velocity of light in vacuum is considered to be maximum, the speed of light cannot be greater than c in any medium.
So c/v will always be greater than or equal to 1, as c>v.
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