Thermionic Emission

Emissions

Field Emission

Photoelectric Emission

Photoelectric Emission

Secondary Emission

The work function of a thermionic emitter is 4.5 eV . By what factor does the thermionic current incease if its temperature is raised from 1500 K to 2000 K ?

The anode of a thermionic diode is connected to the negative terminal of a battery and the cathode to its positive terminal.

If the emission rate of a blackbody at 0 ^@C is R , then the rate of emission at 273^@C is

In Photoelectric emission, radiation consists of

Speed of photons in photoelectric emission is