A converging lens of focal length is used as a simple magnifier so that the final…

PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A converging lens of focal length

4\,\text{cm}

is used as a simple magnifier so that the final image is formed at infinity. Taking the least distance of distinct vision

D=25\,\text{cm}

, calculate its magnifying power (angular magnification).