Question

With the help of a labelled diagram show how light travels from a denser medium to a lighter one. ​

Answer 1

Answer:

the simplest picture is that light always travel at a speed of light. But in a material it travels at a speed of light until it hits an atom .It is then absorbed and re emitted in the same direction, which takes a small amount of time . the more this happen the slower the affective average speed. The denser the material the more atoms there are in the way

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