PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A compound microscope has a tube length of 16cm. Its objective has focal length 1.0cm and its eyepiece has focal length 2.5cm.
(i) Calculate the magnifying power when the final image is formed at the least distance of distinct vision.
(ii) Determine the magnifying power if the microscope is adjusted to form the final image at infinity.
(iii) Find the percentage increase in magnifying power when the adjustment is changed from (ii) to (i).