Question

When light is passing from ice to water, what happens to the speed of light whether increases or decreases? Why?

Answer 1

THE SPEED OF LIGHT DECREASES AS IT PASSES FROM ICE TO WATER BECAUSE OF THE CONDITION OF DENSE

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Answer 2

OK, when light is passing from ice to water, the speed of light will increase, because, ice is more optically dense than water. Thus, when light enters from optically dense medium to optically rare medium, it's speed increases.

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