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Romashka [77]
3 years ago
12

The ratio of the speed of light in a medium to the speed of light in a vacuum

Physics
2 answers:
Liula [17]3 years ago
7 0

Answer:D.Refractive Indez

Explanation:

It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".

Nina [5.8K]3 years ago
3 0

You're going for "refractive index", but you've got the ratio flipped over.

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