A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is

Question

A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-istqlrtjmyaf4241.jpg" /> (A) 20 J (B) -20 J (C) 400 J (D) -374 J

Tardigrade Admin · Accepted Answer

Work done by the system = Area of the loop on P-V diagram W=-(300 - 100)× 10- 6× (200 - 100)× 103 W=-20 J (As cyclic process is in anti-clockwise sense, the work done is negative)

Q. A thermodynamic system is taken through the cycle $PQRSP$ process. The net work done by the system is

$20 J$

$- 20 J$

$400 J$

$- 374 J$

Work done by the system $=$ Area of the loop on $P - V$ diagram
$W = - (300 - 100) \times 1 0^{- 6} \times (200 - 100) \times 1 0^{3}$
$W = - 20 J$
(As cyclic process is in anti-clockwise sense, the work done is negative)

Q. A thermodynamic system is taken through the cycle PQRSP process. The net work done by the system is

20J

−20J

400J

−374J