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The negativel...

Question

The negatively charged electrode within a electrical vacuum tube, also the source of electrons is called __________

A

Anode

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B

EM tube

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C

Vacuum plate

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D

Cathode tube

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Solution

The correct option is D
Cathode tube

A cathode ray tube or CRT is a specialized vacuum tube in which images are produced when an electron beam strikes a phosphorescent surface. The set up has a glass tube consisting of a cathode from which electrons are emitted, an anode which accelerates the electron beam, a screen for the image.

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