This question was previously asked in

ISRO Scientist ME 2012 Paper

Option 3 : For n = 0, the work obtained is the greatest

ST 1: Thermodynamics

2650

20 Questions
60 Marks
32 Mins

**Concept:**

Work obtained in the P – V diagram is the area under the curve.

As clearly seen that Larger the value of n, smaller is the area and so smaller is work obtained. In other words

\(W = \frac{{{P_1}{V_1} - {P_2}{V_2}}}{{n - 1}}\)

**So, W is maximum, when n = 0 i.e. constant pressure process**

W is always zero for n = ∞ i.e. constant volume process