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5. Unit of the power of a lens is

September 17, 2025 by Admin

A. Meter

B. Watt

C. Dioptre

D. Horsepower

✅ The correct answer is option C.

Categories Optical Instruments MCQs, Physics MCQs Tags Optical Instruments MCQs, Physics MCQs

4. In going form a denser to rarer medium a ray of light is

6. Dioptre power of a concave lens of 10 cm focal length is

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