Question

A thermodynamic system is taken through a cyclic process as shown in the PV diagram. The total work done in the process is: 

• A. \( 100 \) J
• B. \( 300 \) J
• C. \( 0 \) J
• D. \( 200 \) J

Hint:

In a \( P-V \) diagram, the work done during a cyclic process is the area enclosed by the curve. Positive work is done when the system expands, and negative work is done when it compresses.

Answer 1

The Correct Option is B

Work done  =  Area under the curve \[ \Rightarrow W = \frac{1}{2} \times (4 - 2) \times (400 - 100) = \frac{1}{2} \times 2 \times 300 \] \[ W = 300J \]