Question

Which of the following statements is incorrect for anode rays?

• A. Anode rays travel in a straight line in the absence of electric and magnetic fields
• B. They travel from anode to cathode
• C. The e/m ratio of anode rays is constant
• D. They are produced by the ionization of the gas in the discharge tube

Answer 1

The correct option is C The e/m ratio of anode rays is constant

From the diagram provided, fluoroscence is obtained on the negative terminal anode rays are being produced.
For different gases, (e/m) ratio for anode rays will be different since the charge of the anode ray depends on the type of gas taken.