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If the speed of light in a medium is 2 x 10^8 m/s, the medium's index of refraction is?
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If the speed of light in a medium is 2 x 10^8 m/s, the medium's index of refraction is?

User Vanval
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speed of light in the air is 3 x 10^8
so index of refractions would be speed of light divided by speed in the medium
3/2 = 1.5

Answer: n=1.5

by the way it is glass :)
User Siwymilek
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