Question

Why the incident ray and the emergent ray is not parallel when light is refracted from a prism and they are parallel when a light ray is refracted ?


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Answer 1

Explanation:

This is because in glass prism, the incident ray of light is not parallel to emergent ray of light. When a ray of light enters the glass prism it gets deviated two times. ... This is because the refracting surfaces of the prism are not parallel to each other