Materials and Components

Q1: 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

ANS:A - Both A and R are true and R is correct explanation of A

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.

Share :

img not found

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.