NEET Physics Heat Engines MCQ Question
Which of the following statements about internal energy changes in thermodynamic processes is correct?
In an isolated system, if no work is done and no heat is transferred, the internal energy remains constant.
The internal energy change is always equal to the work done on the system.
For adiabatic processes, heat is always transferred to the system.
The change in internal energy is dependent on the path taken during the process.
Correct Answer
Detailed Explanation
In an isolated system, if there is no transfer of energy as heat or work, then the internal energy remains constant, as stated in the first law of thermodynamics.
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