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JEE Main & Advanced Physics Semiconducting Devices Question Bank Valve Electronics (Diode and Triode)

  • question_answer
    Coating of strontium oxide on Tungsten cathode in a valve is good for thermionic emission because [RPMT 1998]

    A)            Work function decreases

    B)            Work function increases

    C)            Conductivity of cathode increases

    D)            Cathode can be heated to high temperature

    Correct Answer: A

    Solution :


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