Assignment
Question 1
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
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
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
Question 4
The polarizing filter in a PLM that is located above the objective is called the:
Polarizer
Analyzer
Abbe condenser
Iris
condenser
Question 5
A substance that reacts the same to light polarized in any direction is:
an-isotope
anisotropic
isotropic
divergent
striated
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
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
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
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
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
Question 11
Which of the following are isotropic materials (multiple answer)
air
water
rubbing alcohol
a fiber
a diamond.