Question

Why is light's speed different in different media?

Answer 1

Answer:

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Explanation:

Speed of light does not change, it has to travel more in a medium than in vacuum, ... In a vacuum the photons do not interact with other particles of field. In a medium, photon is absorbed and re-emitted by charged particles that takes time.

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Answer 2

Answer:

because the different medium has different density and hence the density is different the speed is also different