
Lab Exercise 2: Microscopes and Cell Shapes
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Science
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean for a microscope to be parfocal?
It maintains focus when switching between lenses.
It has a built-in camera.
It centers the specimen automatically.
It adjusts light intensity automatically.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which property ensures that a specimen remains centered when switching lenses?
Parallax
Parabolic
Paracentric
Parfocal
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of the diaphragm in a microscope?
To adjust the contrast of the image
To magnify the specimen
To hold the slide in place
To focus the image
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the microscope is responsible for coarse and fine focusing?
Ocular lens
Objective lens
Mechanical stage
Focus knobs
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times does the ocular lens magnify the specimen?
4 times
40 times
10 times
100 times
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total magnification when using the high dry objective lens?
1000 times
400 times
100 times
40 times
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which objective lens is used for oil immersion?
High dry lens
Oil immersion lens
Low power lens
Scanning lens
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