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SSC General Science & Technology Sample Paper NCERT Sample Paper-7

  • question_answer
    Which one of the following displays consists of a matrix of cathode ray tubes each tube producing a single sub-pixel grouped in trees to form Red-Green- Blue (RGB) pixels?

    A)  Light Emitting Diode Display

    B)  Liquid Crystal Display

    C)  Plasma Display

    D)  Field Emission Display

    Correct Answer: D

    Solution :

    [d] A field emission display (FED) is a flat panel display technology that uses large-area field electron emission sources to provide electrons that strike coloured phosphor to produce a colour image. In a general sense, an FED consists of a matrix of cathode ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB) pixels.


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