Q.

A thermodynamic system is taken through the cycle abcda. The work done by the gas along the path bc is            [2024]


 

1 zero  
2 30 J  
3 - 90 J  
4 - 60 J  

Ans.

(1)

As volume is constant along the path bc, it is an isochoric process.

From 1st law of thermodynamics, work done for isochoric process is, W=PΔV

As, ΔV=constant, so W=0J