Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
Advertisement Remove all ads

Let I0 Be the Thermionic Current from a Metal Surface When the Absolute Temperature of the Surface is T0. - Physics


Let i0 be the thermionic current from a metal surface when the absolute temperature of the surface is T0. The temperature is slowly increased and the thermionic current is measured as a function of temperature. Which of the following plots may represent the variation in (i/i0) against (T/T0)?


  • a

  • b

  • c

  • d

Advertisement Remove all ads




Since the thermionic current is directly proportional to the square of the temperature of the surface emitting thermions, the graph is parabolic.

Concept: Electron Emission
  Is there an error in this question or solution?
Advertisement Remove all ads


HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 19 Electric Current through Gases
Q 3 | Page 352
Advertisement Remove all ads

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads

View all notifications

      Forgot password?
View in app×