Question

3
why refreactive index value is larger than 1​

Answer 1

Answer:

1 is the answer

Explanation:

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Answer 2

A refractive index of 1 represents the speed of light in vacuum, and as we know, light is fastest in vacuum, so a refractive index less than 1 would mean that light would be faster in that medium than in vacuum, which is impossible.

That's why refractive indices are always greater than (or equal to) 1

For example, refractive index of

Air = 1.0003

Water = 1.3333...

Glass = 1.5

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