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Question
Show that n = `c/v`, where letters have usual meanings.
Short Answer
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Solution
The refractive index of a medium is defined as the ratio of the speed of light in a vacuum to the speed of light in that medium.
So, n = `"Speed of light in a vacuum"/"Speed of light in that medium" = c/v`
This equation shows how light slows down in denser media, resulting in a refractive index greater than 1.
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