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Uttarakhand PMT Uttarakhand PMT Solved Paper-2011

  • question_answer
    Platinum and silicon are heated up to\[250{}^\circ C\] and after that cooled. In this process of cooling

    A)  resistance of platinum will increase and that of silicon will decrease

    B)  resistance of silicon will increase and that of platinum will decrease

    C)  resistance of both will decrease

    D)  resistance of both will increase

    Correct Answer: B

    Solution :

     On cooling the resistance of platinum (metal) will   decrease   and   that   of   silicon (semiconductor) will increase.


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