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KVPY Sample Paper KVPY Stream-SX Model Paper-30

  • question_answer
    During compression of a spring the work done is 10 kJ and 2 kJ escaped to the surroundings as heat. The change in internal energy, \[\Delta U\](in kJ) is:

    A) 12

    B)  \[-8\]

    C) 8

    D) \[-12\]

    Correct Answer: C

    Solution :

    Work done on system\[=+10kT\]
    Heat escaped\[=-2kI\]
    \[\Delta U=q+w\]
    \[=10-2=8\text{ }KJ.\]


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