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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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