Question

What are anode rays?

Answer 1

Hint: The Anode is defined as the electrode where oxidation takes place in an electrochemical cell. It is a positive terminal of a diode and electrolytic cell but a negative terminal for galvanic cells. These rays were first observed in Crookes tube in an experiment by Eugen Goldstein.

Complete answer:
Anode rays also known as canal rays are produced when a high (several thousand) voltage is connected between the anode and cathode, in a discharge tube containing gas at low pressure. Anode rays are not produced directly from anode, these are seen in between the anode and cathode and moving toward cathode. As anode rays move towards cathode by this it is clear that anode rays consist of positively charged particles which move to cathode which is negatively charged.

Properties shown by anode rays are surprising: their motion is always in a straight line, they cast a shadow of an object coming in their path. Because of having positively charged particles they are deflected by the electric field’s negative plate. They do have mechanical properties as paddle coming in contact with this starts rotating. The positively charged particles were named as protons and velocity of anode rays is smaller than cathode rays.

Note: The rays which are produced at cathode and travel toward anode consisting of negatively charged particles and heat up objects coming in their path are known as cathode rays. They were discovered before anode rays. They have the property of penetrating through thin metal sheets and also cast shadows of objects. Their speed is low as compared to the speed of light. The negatively charged particle was named as electron and was found to be the lightest element.