Question

Why the incidence ray is parrallel to emergent ray????

Answer 1

Since the refracting surfaces are parallel to each othe the emergent rays are parallel. ... Since the surfaces are parallel the rayinside the glass falls at the other surface at angle r and therefore the ray emerges at angle i that is the angle of incidence. Therefore the incident ray is parallel to theemergent ray.

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Answer 2

Since the refracting surfaces are parallel to each othe the emergent rays are parallel. ... Since the surfaces are parallel the ray inside the glass falls at the other surface at angle r and therefore the ray emerges at angle i that is the angle of incidence. Therefore the incident ray is parallel to the emergent ray.

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