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Con sider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system, which of the following statements is true ?
  • a)
    ΔU = – W in an adiabatic process
  • b)
    ΔU = W in an isothermal process
  • c)
    ΔU = – W in an isothermal process
  • d)
    ΔU = W in an adiabatic process
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Con sider a thermodynamic system. If ΔU represents the increase in it...
In adiabatic process
Heat change ΔQ = 0
By first law of thermodynamics,
ΔQ = ΔU + W
⇒ 0 = ΔU + W ⇒ ΔU = - W
In isothermal process;
Temperature change, ΔT = 0
Change in internal energy,
ΔU = nCv ΔT = 0
By ΔQ = ΔU + W ⇒ ΔQ = W
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Con sider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system, which of the following statements is true ?a)ΔU = – W in an adiabatic processb)ΔU = W in an isothermal processc)ΔU = – W in an isothermal processd)ΔU = W in an adiabatic processCorrect answer is option 'A'. Can you explain this answer?
Question Description
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