The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v₂/v₁, is A) 1.99 B) 1.07 C) 0.932 D) 0.511 E) 0.760

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Quizplus · Accepted Answer

The speed of light in a medium is inversely proportional to the refractive index. Thus, v2/v1 = n1/n2 = 1.36/1.46 = 0.932.

The Speed of Light Changes When It Goes from Ethyl