A) \[{{T}^{-1}}\]
B) \[T\]
C) \[{{T}^{2}}\]
D) \[{{T}^{3/2}}\]
Correct Answer: C
Solution :
According to Richardson-Dushman equation, number of thermions emitted per sec per unit area \[J=A{{T}^{2}}{{e}^{-{{W}_{0}}/kT}}\] Þ \[J\propto {{T}^{2}}\]
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