Assertion :The amount of work done in the isothermal expansion is greater than work done in the adiabatic system for same final volume. Reason: In the adiabatic expansion of a gas temperature and pressure both decrease due to decrease in internal energy of the system.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In adiabatic expansion
$∵$ P & T both decreases hence pressure is less than the pressure of isothermal process.
$∴$ Work done in reversible adiabatic is less.

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