Is it true that the refractive index of a medium is inversely proportional to the velocity of light?

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True

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answer is A.

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Detailed Solution

The above statement is True.
Incident light changes its path when it passes from one transparent medium to another medium, called the refraction of light. The speed of light is different in different media. When light enters a denser medium, then its speed reduces, and the light travels faster when it enters a rarer medium with a low refractive index. Hence the refraction index of light is inversely proportional to the speed of light entered.

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