The pressure of air in the bulb of a constant volume gas thermometer of `0^o C` and `100^o C` are `73.00cm and 100cm` of mercury respectively. Calculate the pressure at the room temperature `20^o C`.

Explanation

To solve the problem of finding the pressure at room temperature (20°C) using the data from a constant volume gas thermometer, we can follow these steps:

### Step 1: Understand the relationship between temperature and pressure
In a constant volume gas thermometer, the relationship between temperature (T) in degrees Celsius and pressure (P) in cm of mercury can be expressed as:

\[ T = \frac{P_T - P_0}{P_{100} - P_0} \times 100 \]
...