Lab Quiz 1

Question 1

This lens is on the revolving nose piece, which accomplishes the initial magnification of specimen.

Answer 1

Objective lens

Question 2

This is the lens through which you view magnified specimen

Answer 2

Ocular Lens

Question 3

This gives initial focus on low power

Answer 3

Course adjustment knob

Question 4

This gives refined focus on low power, high power, and oil immersion

Answer 4

Fine adjustment knob

Question 5

This regulates the amount of light passing through the stage aperture and specimen

Answer 5

Iris diaphragm

Question 6

This lens typically has a magnifying power of 4 and is used for initial viewing of specimen.

Answer 6

Scanning lens

Question 7

This lens typically has a magnifying power of 40 or 45, middle length lens

Answer 7

High-power lens

Question 8

This lens typically has a magnifying power of 100, longest length lens

Answer 8

Oil-immersion lens

Question 9

___________ means that when a specimen is in focus under low-power magification, you can switch to high-power magnification and have the specimen remain in reasonably good focus.

Answer 9

Parfocal capability

Question 10

This is a measure of lens quality

Answer 10

Resolving power

Question 11

True or false: High-power lenses have a much shallower depth of field than low-power lenses

Answer 11

True

Question 12

This is used to accept and secure the slides

Answer 12

Mechanical stage