A student constructs a compound microscope using an objective and an eyepiece of…
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A student constructs a compound microscope using an objective and an eyepiece of fixed focal lengths. She gradually increases the distance between the two lenses while keeping the final image at infinity.
(i) Describe qualitatively how the position of the intermediate image formed by the objective shifts as the distance between the lenses is increased.
(ii) Explain, with reasoned arguments, how this change affects the overall magnifying power of the microscope.
(iii) State one practical limitation that prevents indefinitely increasing the lens separation to obtain arbitrarily large magnification.