Do the cathode ray particles originate from the gas at low pressure or from the cathode

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Solution

in a gas at low pressure, ions can acquire sufficient kinetic energy from a strong applied electric field to cause ionization or excitation of atoms and molecules by collisions. ... Both negative and positive ions are moved from the space in front of the cathode because of the applied electric field.
this is how cathode rays are produced

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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

(a) What are cathode rays? What is the nature of charge on cathode rays?

(b) Explain how, cathode rays are formed from the gas taken in the discharge tube.

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