NEET Physics Heat Engines MCQ Question
If the internal energy change (∆U) is zero for an isothermal process involving an ideal gas, what can be inferred about the heat (q) transferred in the process if no work is done?
q is zero
q is positive
q is negative
q can be either positive or negative
Correct Answer
Detailed Explanation
In an isothermal process for an ideal gas where no work is done, ∆U = 0 implies q must be zero, as the change in internal energy equals the heat transferred.
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