Answer the following questions related to the working of a compound microscope.
PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
Answer the following questions related to the working of a compound microscope.
(a) Explain why the object is placed just beyond the focal point of the objective lens rather than exactly at the focal point.
(b) List the sign convention adopted for distances in the lens equation and illustrate its use by describing the sign of each quantity when the objective forms a real, inverted intermediate image.
(c) Describe qualitatively how increasing the tube length affects (i) the position of the intermediate image and (ii) the overall magnifying power of the microscope, keeping the focal lengths fixed.