AIIMS 2017 Physics Adiabatic Processes MCQ Question
In the following questions, a statement of assertion is given followed by a corresponding statement of reason. Assertion: In an adiabatic expansion process, work is done by the gas at the cost of internal energy of the gas.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
In an adiabatic expansion, the gas does indeed perform work, leading to a decrease in its internal energy, which supports the assertion. However, the reason provided—that this process is solely at the cost of internal energy—does not fully explain the assertion, as it overlooks the role of temperature changes and the first law of thermodynamics. Option A is incorrect because, while both statements are true, the reason does not adequately explain the assertion. Option C is incorrect since both statements are true, and option D is false as both statements are accurate. Understanding these concepts is crucial for grasping the principles of thermodynamics and energy conservation in gas processes.
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