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Question
When a ray of light emerges out of a glass slab, then:
Options
∠i = ∠e
∠i > ∠e
∠i < ∠e
none of these
MCQ
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Solution
∠i = ∠e
Explanation:
The opposite faces of a glass slab are parallel, so the emergent ray is parallel to the incident ray. Hence, the angle of emergence equals the angle of incidence.
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