(a) Explain thermiopic emission
(b) State two applications of electrical conduction through gases.
Verified Correct Answer: .
Physical Principles & Numerical Solution
(a) Thermionic emission is the release of electrons from the surface of heated mentals. It is a surface phenomenon and the rate of electron emission increases with temperature increase.
(b) Applications of electrical conducting gases are:
— indentification of gases
— in advertising neon signs
— in fluorescent tubes.
Source: Myschool Past Questions Archive (Record #53640)