The iris of the optical microscope is ____.
A) the platform that holds the specimen slide
B) the controls that bring the objective being examined into focus
C) the eyepiece through which you view an image
D) a diaphragm that opens and closes to change the amount of light illuminating the specimen
E) the mechanism that controls left-right and forward-backward movement of the stage

Question

Quizplus · Accepted Answer

The iris of an optical microscope is a diaphragm that can be opened or closed to adjust the amount of light illuminating the specimen, which helps in improving the contrast and resolution of the image being viewed.

The Iris of the Optical Microscope Is ____