Refractive index of a medium =Speed of light in that mediumSpeed of light in vacuum. The refractive index of medium 2 with respect to medium 1 is given by the ratio of the speed of light in medium 1 and the speed of light in medium 2.
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Refractive index of a medium =Speed of light in that mediumSpeed of light in vacuum. The refractive index of medium 2 with respect to medium 1 is given by the ratio of the speed of light in medium 1 and the speed of light in medium 2.
Explanation:
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