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NEET Sample Paper NEET Sample Test Paper-31

  • question_answer
    When will conductivity of a Ge semiconductor decrease :-                                           

    A)  On adding donor impurity                           

    B)  On adding acceptor impurity

    C)  On making UV light incident

    D)  On decreasing the temperature

    Correct Answer: D

    Solution :

    \[\downarrow \sigma \](conductivity of semiconductor) \[\alpha \,\,T\downarrow \]


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