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The refractive index of diamond is 2.42. What is the meaning of this statement?

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asked Dec 15, 2021 in Light – Reflection and Refraction by Doubtly (98.9k points)
edited Jun 29, 2023

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1 Answer

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answered Dec 15, 2021 by Doubtly (98.9k points)
selected Jun 29, 2023 by Doubtly

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The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air.
In other words, the speed of light in diamond is 1/2.42 times the speed of light in vacuum.

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