A point source placed appropriately in an optical system produces a parallel beam. The system could be _____.

Question

A point source placed appropriately in an optical system produces a parallel beam. The system could be _____. — Exam MCQ

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C. A concave mirror or convex lens — A real source at the focus of a concave mirror or convex lens produces a parallel beam.

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A. A concave mirror or concave lens

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B. A convex mirror or convex lens

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D. Two perpendicular plane mirrors