Why do cathode rays do not depend upon the material of cathode and anode or the type of gas taken in the discharge tube while the canal rays depend?

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Solution

Cathode rays is independent of nature of the gas in the discharge tube, because cathode rays are made up of electrons and electrons are universal constituents means they are same for every gas. While anode rays are made up of positive ions and these are dependent of nature of gas present in tube because positive ions differs for each gas.

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Question 04

Which of the followig statement is not correct about the characteristics of cathode rays ?

(a) The start from the cathode and move towards the anode

(b) They travel in straight line in the absence of an external eletrical or magnetic field

(d) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube

The characteristics of cathode rays do not depend upon material of electrodes.

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