2. Solved Papers
  3. Punjab Medical

Punjab Medical Punjab - MET Solved Paper-2001

  • question_answer
    The impurity atoms with which a pure silicon should be doped to make a\[p-\]type semiconductor is

    A)  phosphorous  

    B)  aluminium

    C)  antimony                           

    D)  arsenic

    Correct Answer: B

    Solution :

    We know that for \[p-\]type semiconductor the doping impurity should be trivalent and aluminium is trivalent.


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