Question

An ideal gas in taken around the cycle ABCDA as shown in figure. The net work done during the cycle is equal to :

• A. zero
• B. positive
• C. negative
• D. we cannot predict

Answer 1

The correct option is A zero

• $A\to B$ and $C\to D$ are an isochoric process so work done is zero in these case.
  
• Now when Ideal gas goes from $B\to C$, assume that it does $X$ work done but while going from $D\to A$ it does same work as $B\to C$ and in Negative means $-X$,
  

That's why the total work done =Zero