Question

Assertion :In adiabatic system, $\Delta U=W_{ad}$ Reason: In adiabatic system, no transfer of heat takes place.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

From the first law of thermodynamics, $\Delta U=q+w$
In adiabatic process, q = 0
$\therefore$ $\Delta U=W_{ad}$