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Sign of DeltaU in adiabatic expansion of...

Sign of `DeltaU` in adiabatic expansion of a gas is _____.

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`-ve`.
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Knowledge Check

  • During adiabatic expansion of 2 mol of a gas, the internal energy of the gas is found to decrease by 2J. The work done by the gas during the process is

    A
    1J
    B
    `-1 J`
    C
    `2 J`
    D
    `-2 J`

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