Question

Describe about refractive index and speed of light
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Answer 1

Answer:

Explanation: The refractive index of a medium (n) is equal to the speed of light (c) divided by the velocity of light through the medium (v). ... Light will travel faster through medium A at a velocity equal to the speed of light divided by the refractive index.

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Answer 2

Explanation:

The refractive index can be seen as the factor by which the speed and the wavelength of the radiation are reduced with respect to their vacuum values: the speed of light in a medium is v = c/n, and similarly the wavelength in that medium is λ = λ0/n, where λ0 is the wavelength of that light in vacuum.