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JEE Main & Advanced Physics Semiconducting Devices Question Bank Semiconductors

  • question_answer
    A P-type semiconductor can be obtained by adding  [NCERT 1979; BIT 1988; MP PMT 1987; 90]

    A)            Arsenic to pure silicon

    B)            Gallium to pure silicon

    C)            Antimony to pure germanium

    D)            Phosphorous to pure germanium

    Correct Answer: B

    Solution :

               Ga has a valancy of 3.


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