When light undergoes refraction at the surface of separation of two media what happens to the speed of light?
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Speech of light decrease
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Explanation:
When a light undergoes refraction at a separation surface of two media, the light speed may increases or decreases which is depends on the transferring of light medium.
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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