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A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
(i) How is the angle of emergence ‘e’ related to the angle of incidence ‘i’?
(ii) What can you say about the value of the angle of deviation in such a situation?

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by Expert (37.9k points)

 (i) Angle of emergence = angle of incidence.
(ii) Angle of deviation becomes minimum in this situation.

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