Draw the graph between `P` and `1//V` (reciprocal of volume) for a perfect gas at constant temperature.

Explanation

To draw the graph between pressure \( P \) and the reciprocal of volume \( \frac{1}{V} \) for a perfect gas at constant temperature, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Ideal Gas Law**: The ideal gas equation is given by:
\[ PV = nRT \]
...