The ocular of a compound microscope has a magnification of 10x and the objective has a magnification of 10x. The total magnification of the microscope is:

 

 

10x

 

 

20x

 

 

100x

 

 

1,000x

 

 

500x

10 points

Question 2

The objective lens of a compound microscope has a numerical aperture of 0.4. The maximum useful magnification of the microscope is:

 

 

400x

 

 

1,000x

 

 

10x

 

 

There is not enough information given to calculate this

 

 

the correct answer is not given

10 points

Question 3

The part of the microscope that focuses the light on an object is the:

 

 

iris diaphragm

 

 

coarse focus

 

 

condenser

 

 

body tube

 

 

stage adjuster

10 points

Question 4

The polarizing filter in a PLM that is located above the objective is called the:

 

 

Polarizer

 

 

Analyzer

 

 

Abbe condenser

 

 

Iris

 

 

condenser

10 points

Question 5

A substance that reacts the same to light polarized in any direction is:

 

 

an-isotope

 

 

anisotropic

 

 

isotropic

 

 

divergent

 

 

striated

10 points

Question 6

The part of the comparison microscope that allows the examiner to view two objects simultaneously is called the:

 

 

comparator

 

 

comparison bridge

 

 

spectroscope

 

 

stage

 

 

polarizer

10 points

Question 7

A stereo microscope can best be described as:

 

 

two compound microscopes aligned so that they each see a slightly different part of an object

 

 

two compound microscopes aligned with a comparison bridge

 

 

a compound microscope with two separate stages and a single ocular

 

 

a compound microscope with two eyepieces and a camera mount

 

 

two compound microscopes with a single stage

10 points

Question 8

In SEM, secondary electrons:

 

 

strike the object, releasing other electrons

 

 

strike the object and then reflect off the surface

 

 

are emitted when a beam of primary electrons strikes the object

 

 

are emitted by the nucleus of the various elements when the object is struck by a beam of x-rays

 

 

are generated as a result of electron beam collisions

10 points

Question 9

In microscopy, resolution is a measure of:

 

 

The ability of the lenses to separate two tiny details that are close together

 

 

the total magnification power of the microscope

 

 

the empty magnification of the microscope

 

 

the ability of an electron microscope to determine the presence of a large number of elements

 

 

the separation of lenses to provide the best image

10 points

Question 10

The refractive index of a material (multiple answer)

 

 

allows a lens to bend light

 

 

is generally the same for all materials

 

 

can be defined using Snell s lax

 

 

is almost always less than 1

 

 

determines what mounting media should be used

10 points

Question 11

Which of the following are isotropic materials (multiple answer)

 

 

air

 

 

water

 

 

rubbing alcohol

 

 

a fiber

 

 

a diamond

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