(a) What is the principle upon which the lighting in fluorescent tubes operate? (b) State...
PHYSICS
WAEC 2003
(a) What is the principle upon which the lighting in fluorescent tubes operate?
(b) State two factors which determine the colour of projection, g the acceleration of free fall due to gravity light from a fluorescent tube
Explanation
(a)The principles is electric discharge through low pressure gas.
(b) Colour of light is determined by
– Nature of gas in the tube
– Nature of coating inside the tube
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