Question

Which of the following statement is not correct regarding cathode rays?

• A. Cathode rays originate from the cathoge
• B. charge and mass of the particles constituting cathode rays depends upon the nature of the gas
• C. Charge and mass of the particles present does not depend the material of the cathode
• D. The ratio charge/mass of the particles is much greater than that of anode rays.

Answer 1

The correct option is A Cathode rays originate from the cathoge

The stream of electrons in cathode ray tube constitutes the cathode rays. Electrons are emitted by hot filament by the process of thermionic emission.

They are not produced by the cathode ray tube.