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JEE Main & Advanced Physics Transmission of Heat Question Bank Conduction

  • question_answer
    The quantity of heat which crosses unit area of a metal plate during  conduction depends  upon [MP PMT 1992; JIPMER 1997]

    A)            The density of the metal

    B)            The temperature gradient perpendicular to the area

    C)            The temperature to which the metal is heated

    D)            The area of the metal plate

    Correct Answer: B

    Solution :

               \[\frac{dQ}{dt}=KA\frac{d\theta }{dl}\]Þ \[\frac{dQ}{dt}\propto \frac{d\theta }{dl}\]        (Temperature gradient)


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