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  1. Consider the following statements:
    The conductivity of a metal has negative temperature coefficient since:

    1. The electron concentration increases with temperature.
    2. The electron mobility decreases with temperature.
    3. The electron-lattice scattering rate increases with temperature.
    Which of the above statements is/are correct?

    2. A.
    1 only
    B.
    1 and 2
    C.
    2 and 3
    D.
    3 only

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    Answer : Option C

    Explanation :

    No answer description available for this question.

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