Deck 3: The Microscope

Question 1

What you see under a compound light microscope is a ___ image.

A) real
B) virtual

Answer 1

B

Question 2

The objective used was 10x. What is the total magnification from the compound light microscope if the ocular lens is 100x?

A) 0x
B) 100x
C) 10x
D) 1000x

Answer 2

D

Question 3

The depth of focus under compound light microscope will be least under ____ magnification. (Choose from the following.)

A) 10x
B) 40x
C) 100x
D) 400x

Answer 3

D

Question 4

The polarizing compound light microscope would be useful for differentiating:

A) synthetic fibers
B) cotton fiber
C) human hair
D) animal fibers

Question 5

Briefly explain how a stereoscope works and how it can be used to examine evidence.

Question 6

Briefly explain how a compound light microscope works and how it can be used to examine evidence.

Question 7

Define the terms numerical aperture, resolution and magnification and how these impact the image.

Question 8

Describe the process of Koehler Illumination. What is the purpose of this technique?

Question 9

Briefly explain how phase contrast microscopy works and how it can be used to help examine evidence.

Question 10

Briefly explain how polarized light microscopy works and how it can be used to examine evidence.

Question 11

Briefly explain how SEM works and how it can be used to examine evidence.