Physics, asked by brownhenry203, 11 months ago

Why is the refractive index of a medium always greater than one? Explain

Answers

Answered by sruthisiva
0
It is because light travels fastest in vacuum, and since the refractive index of vacuum is one, the refractive index of all other materials is greater than one.

But there are some materials called metamaterials, whose refractive index is negative

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