Final: Microscopes

Question 1

How should microscopes be carried?

Answer 1

With two hands, one on the arm of the microscope and the other in the base.

Question 2

What type of material is used to clean microscope lenses?

Answer 2

Lens paper

Question 3

What does the term parfocal mean?

Answer 3

A lens that stays in focus when magnification/focal length is changed

Question 4

What characteristics must specimens have to be seen with a compound light microscope?

Answer 4

Small, flat, and mostly transparent

Question 5

What happens when nontransparent specimens are placed under a compound light microscope?

Answer 5

They appear solid black

Question 6

What are the two key features of the compound light microscope?

Answer 6

Magnification and resolution

Question 7

What are the objective powers for all four objectives.

Answer 7

Scanning = 4X
Second smallest = 10x
Second largest = 40x
Oil lense= 100x

Question 8

How do you calculate the total power of magnification?

Answer 8

Multiply the objective power by 10.

Question 9

What is resolution?

Answer 9

The ability to distinguish 2 points as being separate

Question 10

Why are compound light microscopes limited to a magnification of approximately 2,000x?

Answer 10

The image cannot be clearly resolved and the image looks more distorted as magnification increases