Cathode Ray

What is cathode ray?

• laser

• fast moving electrons

• electromagnetic wave

• beta particles

When electrons are released from hot metal surface, it is known as..

• thermodynamic emission

• thermometric emission

• thermionic emission

The speed of cathode ray is affected by..

• potential difference of anode

• potential difference of cathode

• resistance of cathode

• resistance of filment

The amount of electron emission is affected by the followings except...

• density of cathode

• type of material of cathode

• surface area of cathode

• temperature of cathode

Cathode ray can be deflected by....

• electric field

• magnetic field

• both electric & magnetic field

• none of the above