2024 ThermodynamicsWork Done in Thermodynamic Cyclic Process Hard Question 6 of 54 in Thermodynamics

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

A thermodynamic system is taken through the cycle $abcda$. The work done by the gas along the path $bc$ is:
A -90 J
B -60 J
C zero
D 30 J

The answer is C.

Solution

Along the path bc, the volume is constant ($\Delta V = 0$). $W = \int P\,dV = 0$ So the work done along bc is zero.

Concept Work done along an isochoric path in a P-V cycle

Thermodynamics in past papers

54 questions from this chapter have appeared across 26 exam years.