The refractive index of transparent medium is greater than one because

The refractive index of a transparent medium is greater than one because

(a) Speed of light in vacuum < speed of light in a transparent medium
(b) Speed of light in vacuum > speed of light in a transparent medium
(c) Speed flight in vacuum = speed of light in a transparent medium
(d) Frequency of lightwave changes when it moves from rarer to denser medium​

Answer: The correct answer is Speed of light in vacuum > speed of light in a transparent medium.

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