When a ray of light passes through a triangular glass prism, the emergent ray is generally not parallel to the incident ray. Which of the following best explains this observation?

Question

When a ray of light passes through a triangular glass prism, the emergent ray is generally not parallel to the incident ray. Which of the following best explains this observation? — Exam MCQ

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C. The two refracting faces of the prism are inclined to each other, causing an overall deviation of the light ray. — The correct choice is The two refracting faces of the prism are inclined to each other, causing an overall deviation of the light ray.. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.

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A. The light ray passes through the prism uniformly without any change in direction.

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B. The light ray undergoes complete reflection at both faces of the prism.

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D. The parallel faces of the prism produce equal refractions that cancel each other.

When a ray of light passes through a triangular glass prism, the emergent ray is generally not parallel to the incident ray. Which of the following best explains this observation?

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