Question

The e/m ratio of anode rays produced in the discharge tube, depends on the _________________.

• A. nature of the gas filled in the tube
• B. nature of material
• C. nature of cathode material
• D. all of these

Answer 1

Answer: (A)

nature of the gas filled in the tube
The nature of the anode rays depends upon the gas taken in the discharge tube. Different gases give different types of positive rays, which contain particles having different masses and different charges. Therefore the (e/) ratio is not constant for positive ray particles obtained from different gases.

Hence option A is correct.