Assertion (A): At a temperature of 1000 K, thermionic emission current – McqOptions

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1.	Assertion (A): At a temperature of 1000 K, thermionic emission current is about 0.1 A/cm² of surface. Reason (R): Thermionic emission current is given by I_th = SA₀ T² e^-Ew/kT.
A.	Both A and R are true and R is correct explanation of A
B.	Both A and R are true but R is not correct explanation of A
C.	A is true but R is false
D.	A is false but R is true
Answer» B. Both A and R are true but R is not correct explanation of A

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