AP EAMCET · PHYSICS · Thermodynamics
In a thermodynamic process if ' \(\Delta \mathrm{W}\) ' and ' \(\Delta \mathrm{U}\) ' are the work done and change in the internal energy of a system respectively, then
- A \(\Delta \mathrm{U}=\Delta \mathrm{W}\) in adiabatic process
- B \(\Delta \mathrm{U}=\Delta \mathrm{W}\) in isothermal process
- C \(\Delta \mathrm{U}=-\Delta \mathrm{W}\) in isothermal process
- D \(\Delta \mathrm{U}=-\Delta \mathrm{W}\) in adiabatic process
Answer & Solution
Correct Answer
(D) \(\Delta \mathrm{U}=-\Delta \mathrm{W}\) in adiabatic process
Step-by-step Solution
Detailed explanation
Using Ist law of thermodynamics \(\Delta \mathrm{Q}=\Delta \mathrm{U}+\Delta \mathrm{W}\) for adiabatic process, \(\Delta Q=0\) \(\therefore \Delta \mathrm{U}=-\Delta \mathrm{W}\)
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