AIIMS 2019 Physics Reversible and Irreversible Processes Assertion Reason Question
Assertion: Reversible systems are difficult to find in real world.
Reason: Most processes are dissipative in nature.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option B is correct because both the assertion and the reason are true: a perfectly reversible system does indeed have no energy loss, while real processes are typically dissipative. However, the reason does not directly explain the assertion; it merely states a general characteristic of real processes without addressing the nature of reversible systems. Option A is incorrect because, although both statements are true, the reason does not clarify the assertion. Options C and D are incorrect as they misrepresent the truth of the statements regarding reversible systems and energy dissipation. Understanding these concepts is crucial in thermodynamics, particularly when analyzing efficiency and energy conservation in various processes.
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