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Question

As the refractive index of a medium increases, the speed of light in that medium .

A
increases
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B
decreases
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C
remains constant
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Solution

The correct option is B decreases
Light slows down if the refractive index of a medium increases, because the speed of light in a medium is inversely proportional to the refractive index of the medium, i.e., n ∝ 1/v.

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