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The focal length of a concave mirror is 20 cm · What is its radius of curvature?
10 cm
20 cm
40 cm
80 cm
40 cm
Practice and solve "The focal length of a concave mirror is 20 cm · What is its radius of curvature?..." for RRB JE CBT-1 - Physics · The correct answer is Option C: 40 cm · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "The focal length of a concave mirror is 20 cm · What is its radius of curvature?..." for RRB JE CBT-1 - Physics · The correct answer is Option C: 40 cm · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.