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 Ith = SA0 T2 e-Ew/kT.

If different values are substituted in the equation for Ith the value of emission current comes out to be about 0.1 A/cm2.

Correct Answer: Both A and R are true and R is correct explanation of A

Explanation:

If different values are substituted in the equation for I_th the value of emission current comes out to be about 0.1 A/cm².

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