Question

A thermo dynamical system undergoes cyclic process ABCDA as shown in figure. Work done by the system is

• A. Zero
• B. 2P0V0
• C. P0V0
• D. $\frac { 3 } { 2 }$P0V0

Answer 1

Answer: (A)

Zero

Answer 2

: As is clear from figure.

$W _ { A O D A } = +$ areaof $\triangle A O D = + \frac { P _ { 0 } V _ { 0 } } { 2 }$ $\therefore W _ { \text {net } } = W _ { B C O B } + W _ { \text {AODA } }$ $= - \frac { P _ { 0 } V _ { 0 } } { 2 } + \frac { P _ { 0 } V _ { 0 } } { 2 } =$ zero