A lens of focal length is used as a magnifier

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A lens of focal length 12.5 cm12.5\,\text{cm} is used as a magnifier. By what percentage does its magnifying power increase when the user shifts from normal adjustment to near-point adjustment? (a) 66\% (b) 50\% (c) 33\% (d) 100\%

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