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OpenStudy (anonymous):

does the time delay between the absorption and reemission of light affect the average speed of light in a material ? explain

OpenStudy (ujjwal):

yes, i guess that affects speed of light in a material! That is the reason why the speed of light is less in glass than in air.. And the speed of light in air is less (in fact very less) than that in vacuum!

OpenStudy (anonymous):

Of course. How could it not? The local is slower than the express because it makes stops.

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