RAJASTHAN PMT Rajasthan - PMT Solved Paper-2005

  • question_answer
    If an ideal flask containing hot coffee is shaken, the temperature of the coffee will:

    A)  decrease

    B)  increase

    C)  remain same

    D)  decrease if temperature is below \[4{}^\circ C\] and increase if temperature is equal to or more than \[4{}^\circ C\]

    Correct Answer: B

    Solution :

    We know that there is no loss of heat in an ideal flask. Therefore mechanical energy wasted in shaking, is changed into heat energy and hence, temperature rises.


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