Q.

The heat absorbed by a system in going through the given cyclic process is:               [2024]

1 431.2 J  
2 616 J  
3 61.6 J  
4 19.6 J  

Ans.

(3)

ΔU=0 (Cyclic process)

ΔQ=W=area of P-V curve

ΔQ=π×(140×103 Pa)×(140×10-6 m3)=61.6 J