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Question

Refraction of light as it enters from one transparent medium to another is due to ________


A

transparency of the medium

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B

change in the speed of light

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C

change in pressure

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D

none of these

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Solution

The correct option is B

change in the speed of light


The speed of light is different in different media due to the difference in resistance provided by the medium to the light rays. This change in speed of light is termed as refraction. Even though its phase velocity is changed, the frequency remains constant in refraction.


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