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JEE Main & Advanced AIEEE Solved Paper-2013

  • question_answer
    If a piece of metal is heated to temperature\[\theta \] and then allowed to cool in a room which is at temperature\[{{\theta }_{0}},\]the graph between the temperature T of the metal and time t will be closed to:     AIEEE Solevd Paper-2013

    A)               

    B)

    C)

    D)       

    Correct Answer: C

    Solution :

    Since, by Newton?s law of cooling, the rate of change of temperature is proportional to the difference in temperature between the object and surrounding, as the temperature of the piece of metal approaches\[{{\theta }_{0}},\]the rate of change of temperature will approach zero.


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