Quiz 3

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parfocal

(one word) is defined as the ability to quickly focus while switching from a lower power lens to a higher power lens with a minimal amount of adjustment, using the fine focus knob only.

immersion oil

What is used to decrease the amount of light that is refracted when using a compound light microscope to view a specimen at the highest level of total magnification? (two words) Answer:

False

Viruses can be viewed with the compound light microscope. Select one: True False

b. 1000X

A specimen viewed with the oil immersion objective lens would have a total magnification of: Select one: a. 100X b. 1000X c. 10X d. 40X

d. transmit

A transparent specimen will ________ light. Select one: a. diffuse b. reflect c. absorb d. transmit

True

The Foldscope has a 140X objective lens. Select one: False

d. left

When viewing a specimen through the microscope, if you want the specimen to move to the right within your field of vision, which direction should you move the stage? Select one: a. right b. up c. down d. left

c. size of the specimen observed

Which does NOT affect resolution? Select one: a. numerical aperture of the objective b. ability to gather light c. size of the specimen observed d. wave length of light

d. 100X

Which objective lens requires the use of immersion oil? Select one: a. 4X b. 10X c. 40X d. 100X

a. Condenser lens

Which of the following controls the amount of light passing through a slide on the microscope stage? Select one: a. Condenser lens b. Coarse adjustment c. Objective lens d. Fine adjustment


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