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23 November, 07:47

In which medium would light travel the fastest?

Question 21 options:

a. across a room

b. in a swimming pool

c. through outer space

d. through a railroad track

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Answers (1)
  1. 23 November, 08:25
    0
    EM waves travel fastest through gas, since the particles are more spread out, and least, since the particles are packed together. Liquids would be average speed. I would say choice A, since B is a liquid, C is a vacuum (no matter), and D is a solid.
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