Two thin convex lenses A and B have focal lengths of and respectively
PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
Two thin convex lenses A and B have focal lengths of 2.5cm and 4.0cm respectively. Each is used separately as a simple magnifier by a person whose least distance of distinct vision is 25cm, viewing with the eye relaxed (final image at infinity).
(i) Calculate the magnifying power of lens A.
(ii) Calculate the magnifying power of lens B.
(iii) Which lens gives the larger magnification and by what factor does it exceed the other?