BHU PMT BHU PMT (Screening) Solved Paper-2008

  • question_answer
    A pure semiconductor behaves slightly as a conductor at

    A)  room temperature        

    B)  low temperature

    C)  high temperature          

    D)  Both  and

    Correct Answer: A

    Solution :

                     At room temperature, a few electrons in valence band acquire energy greater than the forbidden energy gap and move to conduction band. Hence, at room temperature a pure semiconductor behaves slightly as a conductor.


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