(a) What is the principle upon which the lighting in fluorescent tubes operate?
(b) State two factors on which the colour of light from a fluorescent tube depends.
(b) State two factors on which the colour of light from a fluorescent tube depends.
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Correct Answer: Option n
Explanation:
(a) Electrical discharge through low pressure gas
(b)
- Nature of the gas in the tube
- Nature of the coating d inside the tube.
(a) Electrical discharge through low pressure gas
(b)
- Nature of the gas in the tube
- Nature of the coating d inside the tube.