In refraction of light what happens to the speed of the light when it travels from an optically rarer medium to an optically denser medium?

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Decreases

Increases

Constant

None of the given options

answer is A.

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Detailed Solution

When the light travels from optically rarer medium to optically denser medium, the speed of light decreases and it bends towards the normal while when it travels from optically denser medium to rarer medium, the speed of light increases and it bends away from the normal.

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