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What is cathode rays discharge tube ...

What is cathode rays discharge tube ? Write down its uses.

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Cathode ray discharge : To study electrical discharge in patially evacuated tubes knows as cathode ray discharge tubes. Cathode ray discharge tubes in depicted in following figure

It is made of glass containing two thin pieces of metal called electrodes.
use : The electrical discharge through the gases could be observed only at very low pressure and at very high voltages and as example to obtain cathode rays.
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