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An ideal gas has undergone the cyclic process shown in the figure. The work done by the gas in the entire cycle is ______ ×10⁻¹ J. (Take π=3.14.)

Asked in JEE Main 7th April 1st Shift 2025 · Work as the Area of a Closed Loop

Figure: Work as the Area of a Closed Loop
Answer: 314

Step-by-step solution

Round a closed loop the work is the enclosed area, and here the loop is a circle

on the V-P plane.

W=π ab with a and b the semi-axes in SI units, which the scales give as

ab=10.

W=10π=31.4 J =314×10⁻¹ J.

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