What part of the microscope is mounted on the nosepiece?
A) objective lenses
B) focus knobs
C) condenser
D) iris diaphragm
A
Explanation:
B) The focus knobs are found on the sides of the microscope.
C) The condenser is a small lens under the stage that narrows the beam of light and directs it through the specimen on the slide.
D) The iris diaphragm is a series of flat metal plates at the base of the condenser that slide together and create an aperture in the condenser to regulate the amount of light passing through the condenser.
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