Ncert Exercises & Solutions

Consider the \((P-V)\) diagram for an ideal gas shown in the figure.

Out of the following diagrams, which figure represents the \((T-P)\) diagram?

1.		2.
3.		4.

3. Hint: The pressure is decreasing.

Step 1: Find the graph corresponding to the given graph.

Given, PV = constant. Hence, we can say that the gas is going through an isothermal process. Clearly, between states 1 and 2, the temperature is constant and the gas expands and the pressure decreases i.e.

P_{2} < P_{1}

which corresponds to diagram(iii).

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