Explain why the refractive index of any material with respect to air is always greater 1.
Thursday, February 29, 2024
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Question: Explain why the refractive index of any material with respect to air is always greater 1.
The refractive index of a material with respect to air is the ratio of the speed of light in air to the speed of light in that material. Since the speed of light in air is always greater than the speed of light in any material, this ratio is always greater than 1. This means that light slows down when it enters a material from air, and bends towards the normal. The refractive index is a measure of how much the light bends when it changes medium.
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