A watchmaker uses a converging lens of focal length as a simple magnifier

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

Problem

A watchmaker uses a converging lens of focal length

5\,\text{cm}

as a simple magnifier. Taking the least distance of distinct vision as

25\,\text{cm}

, calculate the magnifying power when the final image is at the near point.