(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
Verified Correct Answer: .
Physical Principles & Numerical Solution
(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
Source: Myschool Past Questions Archive (Record #54023)