Multiple Choice
The optical microscopes used in physicians' office laboratories usually have __________ objectives.
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9. Microscopes
Introduction to Microscopes
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Which part of a light microscope controls the amount of light allowed on the specimen?
A
Stage clip
B
Objective lens
C
Coarse focus knob
D
Iris diaphragm
Verified step by step guidance1
Understand the function of each part of the light microscope listed in the options.
The stage clip holds the slide in place and does not control light.
The objective lens magnifies the specimen but does not regulate light intensity.
The coarse focus knob adjusts the focus by moving the stage or objective lens but does not control light.
The iris diaphragm is a component located under the stage that controls the diameter of the light beam passing through the specimen, thereby regulating the amount of light.
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