Question

When light undergoes refraction at the surface of seperation of two media, what happens to speed of light

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Answer 1

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During refraction, if the light enters from “one medium to another medium” then the speed of light depends upon the density of mediums. If light enters from denser medium to rarer (lighter) medium then its speed increases. If light enters form rarer medium to denser medium then the “speed of light” decreases.

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Answer 2

Answer:

During refraction, if the light enters from “one medium to another medium” then the speed of light depends upon the density of mediums. If light enters from denser medium to rarer (lighter) medium then its speed increases. If light enters form rarer medium to denser medium then the “speed of light” decreases.