Why does white light split into different colours when passing through a prism but not when passing through a glass slab?

Question

Why does white light split into different colours when passing through a prism but not when passing through a glass slab? — Exam MCQ

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B. Because a prism has non-parallel sides — The correct choice is Because a prism has non-parallel sides. 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. Because a prism is made of a different material

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C. Because a prism is transparent

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D. Because a prism is thinner than a slab

Why does white light split into different colours when passing through a prism but not when passing through a glass slab?

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