If the focal length of a simple magnifier is decreased while the final image is kept…
PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
If the focal length of a simple magnifier is decreased while the final image is kept at infinity, how does its magnifying power change (least distance of distinct vision remains 25cm)?
(a) It decreases
(b) It first increases and then decreases
(c) It increases
(d) It remains unchanged