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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    In an electron gun, the control grid is given a negative potential, relative to cathode in order to

    A)  accelerate the electrons

    B)  decrease KE of electrons

    C)  repel the electrons

    D)  decelerate the electrons

    Correct Answer: C

    Solution :

    In an electron gun, the control grid is given a negative potential relative to cathode in order to repel the electrons so that a converging beam of electrons emerges from gun.


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