Q

A spherical mirror has focal length 12 cm. What is its radius of curvature?

RRB Ministerial & Isolated Categories (Primary Teacher); RRB Technicians Grade-III 11/09/2025 / Shift-I; 23/12/2024 / Shift-II 2025; 2024
✓ Answer: C 24 cm
R = 2f = 24 cm.
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