What is the refractive index of a medium if the speed of light in it is 2.25 × 10⁸ m/s? - OPTICS Quiz | GKFix.in

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Question

What is the refractive index of a medium if the speed of light in it is 2.25 × 10⁸ m/s?

A. 1.5
B. 1.0
C. 1.33
D. 0.75