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JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

  • question_answer
    This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: A pure semiconductor has negative temperature coefficient of resistance. Statement 2: On raising the temperature,  more charge carriers are released into the conduction band.   JEE Main Online Paper (Held On 12 May 2012)

    A) Statement 1 is false. Statement 2 is true.

    B)                        Statement 1 is true. Statement 2 is false.

    C)                        Statement 1 is true. Statement 2 is true, Statement 2 is not a correct explanation of Statement 1.

    D)                        Statement 1 is true. Statement 2 is true, Statement 2 is the correct explanation of Statement 1.

    Correct Answer: D

    Solution :

                    Temperature coefficient of resistance is negative for pure semiconductor. And no. of charge carriers in conduction band in creases with increase in temperature.


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