define the cathode rays?
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A cathode ray is a beam of electrons in a vaccume tube travelling from the negativity charged electrode (cathode) at one end to the positively charged electrode (anode) at the other, across voltage dinference between the electrodes. they are also called electrons beam.
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Explanation:
The stream of electrons in cathode ray tube constitutes the cathode rays. Electrons are emitted by hot filament by the process of thermionic emission. These electrons pass through controlling and focusing device . They are accelerated by applying appropriate voltage between cathode and anode and finally made incident on a flourascent screen after passing through cross electric and magnetic fields.
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