Identify the sealed glass vacuum tube containing an electron

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Identify the sealed glass vacuum tube containing an electron beam that is focused on a phosphor-coated glass screen when light is emitted.

[SSC CGL 27 July 2023 Shift 2 With Answers]

A

Cathode ray tube

B

Liquid Crystal Display tube

C

Flat array tube

D

Light Emitting Diode tube

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