state the law of refraction of light . Give an expression to relate the refractive index of a medium with speed of light in vacuum
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see answer in pic .........
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Explanation:
1 .
when a light ray passes from a rarer medium to a denser medium ,it bend toward the normal.
2. .
when a light ray passes from a denser medium to a rarer medium ,it bend away from the normal
3. .
when a light is incident normally at the boundry between two media, it does not change its direction and hence does not get refracted
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