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You are given kerosene, turpentine oil and water. In which of these does the light ray travel fastest? Given refractive index of kerosene = 1.44

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+1 vote
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asked Jan 19, 2018 in Physics by Kundan kumar (49,132 points) ● 34 ● 381 ● 1019
edited Jan 25, 2018 by faiz

You are given kerosene, turpentine oil and water. In which of these does the light ray travel fastest? Given refractive index of kerosene = 1.44, Refractive index of turpentine 1.47, refractive index of water = 1.33.

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+1 vote
answered Jan 19, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
selected Jan 19, 2018 by Kundan kumar
 
Best answer

Speed of light in a medium is inversely proportional to refractive index of the medium, i.e, v∝1/n.

As refractive index of water is minimum, so light travels fastest in water.

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