JEE Main · 2023 · 15 Apr 2023 · Shift 1 · Heat & Thermodynamics

A thermodynamic system is taken through cyclic process. The total work done in the process is :

(A)100 J
(B)300 J✓ Correct
(C)Zero
(D)200 J

Answer: (B)

Solution

In a cyclic process the work done equals the area enclosed by the loop on the

P

–

V

diagram. The loop is a triangle with base

(4 - 2) = 2 m^{3}

along the volume axis and height

(400 - 100) = 300 Pa

. Its area is

\frac{1}{2} \times 2 \times 300 = 300 J

, so the total work done in the process is

300 J

JEE Main · 2023 · 15 Apr 2023 · Shift 1 · Single correct option

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