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A light movs from denser to rarer medium, which of the following is correct?
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The correct answer is:
Velocity increases
When a ray of light moves from one medium to other, its velocity changes. This change depends on refractive index of the medium.
Light travels from denser to rarer medium, $i e$, from medium of higher refractive index to lower refractive index. So, in second (rarer) medium, its velocity increases.
Light travels from denser to rarer medium, $i e$, from medium of higher refractive index to lower refractive index. So, in second (rarer) medium, its velocity increases.
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