The process by which free electrons are emitted from the surface of a – McqOptions

MCQOPTIONS

1.	The process by which free electrons are emitted from the surface of a metal when external heat energy is applied is called ______.
A.	Schottky emission
B.	Photo-excited emission
C.	Thermionic emission
D.	Photo-electric emission
Answer» D. Photo-electric emission

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