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

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

According to Richardson-Dushman equation, number of thermions emitted per sec per unit area $J=A T^2 e^{-W_0 / k T} \Rightarrow$ $J \propto T^2$

MCQ

CBSE - English Medium

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

A$T^{-1}$
B$T$
C$T^2$
D$T^{3 / 2}$

[CBSE PMT 1990; RPMT 2000; CPMT 2002]

STD 12 Science
JEE physics
Electronics
NCERT

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