JEE Main & Advanced Physics Transmission of Heat Sample Paper Topic Test - Transmission Of Heat

  • question_answer
    A bucket full of hot water is kept in a room and it cools from \[75{}^\circ C\] to \[70{}^\circ C~\] in \[{{T}_{1}}\] minutes, from \[70{}^\circ C\] to \[65{}^\circ C\] in \[{{T}_{2}}\] minutes and from \[65{}^\circ C\] to \[60{}^\circ C~\] in \[{{T}_{3}}\] minutes. Then

    A) \[{{T}_{1}}={{T}_{2}}={{T}_{3}}\]

    B) \[{{T}_{1}}<{{T}_{2}}<{{T}_{3}}\]

    C) \[{{T}_{1}}>{{T}_{2}}>{{T}_{3}}\]

    D) \[{{T}_{1}}<{{T}_{3}}<{{T}_{2}}\]

    Correct Answer: B

    Solution :

    [b] More the initial temperature more is the rate of cooling. Hence, \[{{T}_{3}}>{{T}_{2}}>{{T}_{1}}\]      OR   The rate of cooling decreases with decrease in temperature difference between body and surrounding.


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