Home
Class 12
PHYSICS
Let i0 be the thermionic current from a ...

Let `i_0` be the thermionic current from a metal surface when the absolute temperature of the surface is `T_0`. 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/i_0)` against `(T/T_0)` ?

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Objective 2|7 Videos

  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Exercises|23 Videos

  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Short Answer|10 Videos

  • ELECTRIC CURRENT IN CONDUCTORS

    HC VERMA|Exercise Exercises|84 Videos

  • ELECTRIC FIELD AND POTENTIAL

    HC VERMA|Exercise Exercises|75 Videos

Similar Questions

Explore conceptually related problems

which of the following graph represents the variation of resistivity ( rho ) with temperature (T) for copper?

The power P is received by a surface at temperature T_(0)K from a small sphere at temperature

The ratio of thermionic currents (I//I_(0)) for a metal when the temperature is slowly increased T_(0) to T as shown in figure. (I and I_(0) are currents at T and respectively). Then which one is correct?

When an electric heater is switched on, the current flowing through it ( i ) is plotted against time ( t ). Taking into account the variation of resistance with temperature, which of the following best represents the resulting curve

Switch S of the circuit shows in Fig. is closed at t = 0 . If e denotes the induced emf in L and i the current flowing through the circuit at time t , then which of the following graphs correctly represents the variation of e with i ?

The surface temperature of the sun is T_(0) and it is at average distance d from a planet. The radius of the sun is R . The temperature at which planet radiates the energy is

The alternating current from a source is represented by I = 0.5 sin 314 t . The frequecy of a.c. is