A(n) ________ Acts to Vary the Diameter of the Light

Question

A(n) ________ acts to vary the diameter of the light column in a light microscope.
A) condenser
B) objective
C) ocular
D) diaphragm
E) lens

Accepted Answer

The diaphragm controls the amount of light that enters the microscope and also affects the diameter of the light column. By adjusting the diaphragm, one can alter the angle of light entering the objective lens, which in turn controls the size of the specimen's image.