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JEE Main & Advanced AIEEE Solved Paper-2003

  • question_answer
    According to Newton's law of cooling, the rate of cooling of a body is proportional to \[{{(\Delta \theta )}^{n}}\], where \[\Delta \theta \] is the difference of the temperature of the body and the surroundings and n is equal to     AIEEE  Solved  Paper-2003

    A) 2            

    B)                       3                                             

    C) 4                                             

    D) 1

    Correct Answer: D

    Solution :

    According to Newton's law of cooling,                     \[\frac{dQ}{dt}\propto \Delta \theta \] But             \[\frac{dQ}{dt}\propto {{(\Delta \theta )}^{n}}\]                               (given) \[\therefore \]      n = 1


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