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What is the focal length of a lens if its power is -2.5 D?
20 cm
30 cm
40 cm
50 cm
40 cm
Practice and solve "What is the focal length of a lens if its power is -2.5 D?..." for RRB JE CBT-1 - Science · The correct answer is Option C: 40 cm · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "What is the focal length of a lens if its power is -2.5 D?..." for RRB JE CBT-1 - Science · The correct answer is Option C: 40 cm · Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.