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(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.
(ii)Thermions have dissimilar velocities.
(iii)This was discovered by Edison
i am class 12 student given an assignment on ''to study the truth operation performed by OR GATE.'' please help me with the assignment
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