The thermionic emission of electron is due to
Text Solution
Verified by ExpertsThe correct answer is:
C
Thermionic emission is the emission of electrons from a metal surface when it is heated to a high temperature.
Heating gives electrons enough energy to escape from the metal surface.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Number of secondary electrons emitted per number of primary electrons depends on
Due to S.C.R in vacuum tube
In diode, when there is saturation current, the plate resistance is
In a triode, , resistance load, kilo ohm. The voltage amplification obtained from this triode wil…
In an amplifier the load resistance is equal to the plate resistance . The voltage amplification …
For a given plate-voltage, the plate current in a triode is maximum when the potential of