Question

Causes of refraction

Answer 1

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Answer 2

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${\bold{\red{Cause\:of\: Refraction}}}$

Speed of light is different in different media, i.e., more rare medium and comparatively less in denser medium.So, when light enters a denser medium,it's speed reduces and it it bends toward the normal and when it enters rarer medium,it's speed increases and it bends towards from the normal.

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