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Prove that in a glass slab incident ray is parallel to the emergent ray |
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Answer» By using Snell theorem of refraction, n21 = sin i / sin r n21 = 1 / n12 n12 = sin r / sin e n21 = sin e / sin r sin i / sin r = sin e / sin r Thus, sin i = sin e Therefore, Incident ray is parallel to emergent ray. |
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