Cc Flashcards
1
Q
- Which of the following lamps provides a continuous spectrum of radiant energy in the visible, near IR, and near UV regions of the spectrum?
A. Tungsten-filament
B. Hydrogen
C. Deuterium
D. Mercury vapor
A
A. Tungsten-filament
2
Q
- Which of the following isolates lightwithin a narrow region of the spectrum?
A. Photomultiplier tube
B. Monochromator
C. Photovoltaic cell
D. Detector
A
B. Monochromator
3
Q
**3. Which of the following is not descriptive of a photomultiplier tube? **
A. Emits electrons proportionally to
initial light absorbed
B. Must be shielded from stray light
C. Cannot be used with a chopper
D. Amplifies the initial signal received
A
C. Cannot be used with a chopper
4
Q
- Which of the following is false abouta photomultiplier tube?
A. Converts radiant energy (light)
to electrical energy (current)
B. Amplifies the current significantly
C. Has a very rapid response time
D. Is composed of an iron plate and
a layer of selenium
A
D. Is composed of an iron plate and
a layer of selenium
5
Q
- Which type of photodetector employsa linear arrangement that allows it torespond to a specific wavelength resultingin complete UV/visible spectrum analysis?
A. Photomultiplier tube
B. Phototube
C. Barrier layer cell
D. Photodiode array
A
D. Photodiode array
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38
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