Magnetic-coil are used in camera tube to

increase electron-beam intensity.

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decrease electron-beam intensity.

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give horizontal and vertical motion to the beam.

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None of the above.

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Solution

The correct option is A give horizontal and vertical motion to the beam.
The electron-beam coming out of the electron gun needs to scan each element on the photo-conductive layer from top to bottom, so for scanning entire target electron beam is deflected by these magnetic deflecting coils.

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Magnetic-coil are used in camera tube to

The correct option is A give horizontal and vertical motion to the beam.The electron-beam coming out of the electron gun needs to scan each element on the photo-conductive layer from top to bottom, so for scanning entire target electron beam is deflected by these magnetic deflecting coils.

The correct option is A give horizontal and vertical motion to the beam.
The electron-beam coming out of the electron gun needs to scan each element on the photo-conductive layer from top to bottom, so for scanning entire target electron beam is deflected by these magnetic deflecting coils.