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Which mirror converges a parallel beam of light to a real focus?
Aconvex mirror
Bplane mirror
Cspherical lens
Dconcave mirror
Answer & Solution
Correct answer: D. concave mirror
1. A concave surface bends reflected rays inward.
2. Parallel rays then meet at a real point, the focus, in front of it.
3. A convex mirror only diverges the beam.
_Source: AP/TS SCERT Class 10 Physical Science, "Reflection of Light at Curved Surfaces"_
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