EASY
Earn 100

The number of thermions emitted per second from a substance is known as the rate of thermionic emission. This value depends on the Surface Area.

50% studentsanswered this correctly

Important Questions on Thermionic Emission and Radioactivity

EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
State the characteristics required of a good thermion emitter.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
State two factors on which the rate of emission of thermions depends on.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Thermionic emission is the liberation of _____ from an electrode by virtue of its temperature.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Explain the experimental set up to produce thermionic electron emission.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
State the characteristics required for a good thermionic emitter. 
 
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Explain the term Thermionic emission.
HARD
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
What causes X-rays?
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
The material used for making thermionic cathode must have
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission

State three factors on which the rate of emission of electrons from a metal surface depends.

EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
A good thermionic emitter has 
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Thermionic electron emission can be done by cathode ray tube. Explain.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Name a substance that is a good thermionic emitter.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
What is the factor upon which the rate of thermionic emission, defined as the number of thermions emitted per second from a substance, primarily depends?
HARD
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
What does thermionic emission means? List the factors affecting thermionic emission.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Emission of electrons by the absorption of heat energy is called ................. emission.
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Mention two important properties of metal that make it a good thermionic emitter?
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
The characteristics that material should possess to act as a good thermion emitter are Low work function and High _____ point.
MEDIUM
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
Continuous emission spectrum is produced by
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
The number of thermo electrons emitted per second from the cathode does not depend upon
EASY
Science>Physics>Thermionic Emission and Radioactivity>Thermionic Emission
State two characteristics of the substance used as a thermionic emitter.