E1: Microscopy

Question 1

It consists of a stand (base + arm), on which is mounted the stage and lenses

Answer 1

Microscope

Question 2

What type of lens is on top that usually has 10x or 15x power?

Answer 2

Ocular lens

Question 3

What type of lens that focuses on the specimen?

Answer 3

Objective lens

Question 4

What are the three objective lenses of varying magnifications mounted on a revolving nosepiece?

Answer 4

• Scanning Lens
• Low power Lens
• High power Lens

Question 5

It directs light through the slide into the objective

Answer 5

Condenser

Question 6

Diaphragm on the substage condenser controls the amount of light reaching the objective, and also affects the contrast of the specimen

Answer 6

Iris

Question 7

What are the two types of lenses in the microscope?

Answer 7

• Ocular Lens
• Objective Lens

Question 8

It’s an eyepiece, which magnifies an object 10 to 15 times its normal size

Answer 8

Ocular Lens

Question 9

It’s located on a revolving nosepiece and has three types of magnification

Answer 9

Objective Lens

Question 10

It is used to focus on a specimen by moving
the stage up and down

Answer 10

• Coarse Adjustment Knobs
• Fine Adjustment Knobs

Question 11

Used for initial focusing, this knob makes large, quick adjustments to the stage’s position. It has a full range of motion, moving the stage by centimeters.

Answer 11

Coarse adjustment knob

Question 12

Used to fine-tune the focus, this knob makes small, precise adjustments to the stage’s position. It has a smaller range of motion, moving the stage by millimeters.

Answer 12

Fine adjustment knob