If the objective lens of a compound microscope is replaced with a lens of double the focal length while the eyepiece also has its focal length doubled,what will happen to the overall magnification of the microscope?
A)This will result in no change in the magnification.
B)The magnification doubles.
C)The magnification quadruples.
D)The magnification decreases.

Question

Quizplus · Accepted Answer

The overall magnification of a compound microscope is given by the product of the magnification of the objective lens and the magnification of the eyepiece. If the focal length of the objective lens is doubled, its magnification reduces by half, as M=fo/fe. Similarly, if the focal length of the eyepiece is doubled, its magnification also reduces by half. Therefore, the overall magnification of the microscope will be reduced to one-fourth of its original value.

If the Objective Lens of a Compound Microscope Is Replaced