(a) Draw a neat, labelled ray diagram showing the formation of the final image in a…
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
(a) Draw a neat, labelled ray diagram showing the formation of the final image in a compound microscope adjusted for normal vision (final image at infinity).
(b) Using the ray diagram, derive an expression for the total magnifying power M of the microscope in terms of the tube length L and the focal lengths fo (objective) and fe (eyepiece).
(c) A compound microscope has an objective of focal length fo=0.5cm and an eyepiece of focal length fe=2.5cm. The distance between the objective focal plane and the eyepiece is fixed at L=16cm. Calculate the magnifying power obtained under the normal adjustment.