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Question
Assertion :In a thermodynamic process, initial volume of gas is equal to final volume of gas. Work done by gas in this process should be zero. Reason: Work done by gas in isochoric process is zero.
Assertion :In a thermodynamic process, initial volume of gas is equal to final volume of gas. Work done by gas in this process should be zero. Reason: Work done by gas in isochoric process is zero.
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Solution
The correct option is C Assertion is incorrect but Reason is correct
Given that initial and final volumes are equal.
Work done is a path function, and depends on the path taken between the initial and final states.
Work done is only zero along the isochoric path.
Hence, work done in an isochoric path is zero, but the work done need not be zero if the initial and final volume are equal.
Hence, assertion is false and reason is true. No option matches.
Given that initial and final volumes are equal.
Work done is a path function, and depends on the path taken between the initial and final states.
Work done is only zero along the isochoric path.
Hence, work done in an isochoric path is zero, but the work done need not be zero if the initial and final volume are equal.
Hence, assertion is false and reason is true. No option matches.
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