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What is the refraction index of a medium? -the ratio of the velocity of light in the medium over the velocity of light in a vaccum -the ratio of the velocity of light ina vacuum over a velocity of light
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What is the refraction index of a medium?

-the ratio of the velocity of light in the medium over the velocity of light in a vaccum
-the ratio of the velocity of light ina vacuum over a velocity of light in the medium
-the ratio of the angle of incidence over the angle of refraction
-the ration of the angle of refraction over the angle of incidence

User Hevlastka
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the ratio of the velocity of light in the medium over the velocity of light in a vacuum
User Raghuvd
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