Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion


Secondary emission results

[A]. when temperature of metals is raised to a level above the crystallization temperature
[B]. when metals are subjected to strong magnetic fields
[C]. when light rays fall on the metal surface
[D]. when a high velocity beam of electrons strikes as metal surface

Answer: Option B


No answer description available for this question.

Kunjal said: (Aug 16, 2016)  
Definition of Primary emission.

Electron emission arising from the irradiation including thermal heating or the application of a strong electric field to a surface.

Saurabh Shah said: (Nov 4, 2016)  
I think the correct answer is D.

Jeeva said: (Jul 19, 2017)  
Yes, D only correct.

Saurabh Kumar said: (Sep 14, 2020)  
Option D is correct.

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