Fluorescent tubes are partially evacuated glass tubes filled with low-pressure ___________________vapour
Fluorescence

Quiz
•
Physics
•
11th - 12th Grade
•
Easy
Alexander Bellew
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8 questions
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1.
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1 min • 1 pt
2.
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1 min • 1 pt
Fluorescent tubes are partially evacuated glass tubes with a ___________________coating on the glass
3.
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1 min • 1 pt
When an electric current is passed through the vapour, the electrons in ___________________are excited and move to a higher energy Level
4.
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1 min • 1 pt
This high energy level state is ___________________and so the electron moves
back to its original state
5.
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1 min • 1 pt
As it de-excites, the electron releases some of that energy in the form of
an _____________ photon
6.
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1 min • 1 pt
The UV light emitted from the mercury atoms then excites the electrons in the
___________________coating
7.
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1 min • 1 pt
The electrons in the excited phosphor atoms de-excite in _______ steps
8.
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1 min • 1 pt
The phosphor atoms emit ____________ light photons when they de-excite
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