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JEE Main & Advanced Physics Semiconducting Devices Question Bank Semiconductors

  • question_answer
    Regarding a semiconductor which one of the following is wrong                                                [CPMT 2004]

    A)            There are no free electrons at room temperature

    B)            There are no free electrons at 0 K

    C)            The number of free electrons increases with rise of temperature

    D)            The charge carriers are electrons and holes

    Correct Answer: A

    Solution :

               At room temperature, few bonds breaks and electron hole pair generates inside the semiconductor.


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