Thermionic emissions are related to

Thermionic emission from a heated filament varies with its temperature T as

Mass emission norms are related to

Thermions are

The thermionic emission of electron is due to

A : The process of photoelecton emission and thermionic emission of electrons is different . R : Photoelectric emission does not depend upon tempereature , whereas thermionic emission is temperature depandent .

Why does thermionic emission not take place in nonconductors?

Why does thermionic emission not take place in nonconductors?

Why does thermionic emission not take place in nonconductors?

Explain thermionic emission, field emission and photoelectric emission.