The diagram below shows a cathode ray tube in which the arrow indicates a beam of charged particles approaching an electric field between the plates A and B. Name the charged particles.

Electron

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Proton

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Neutron

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Alpha

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Solution

The correct option is A Electron
Cathode Ray Tube (CRT) is an apparatus used as a display device in televisions and computers. It is essentially made up of 4 parts:
1. Electron Gun
2. Focussing and Accelerating Anodes
3. Horizontal and Vertical Deflection Plates
4. Evacuated Glass Envelopes
Electron gun is used to produce stream of charged electrons.

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