By increasing temperature of gas by `5^(@)C` its pressure increase by `0.5%` from its initial value at constant volume then what is initial temperature of gas?

Explanation

To solve the problem, we will use the relationship between pressure and temperature for a gas at constant volume, which is described by Gay-Lussac's law.

### Step-by-Step Solution:

1. **Understanding the Relationship**:
According to Gay-Lussac's law, the pressure of a gas is directly proportional to its absolute temperature when the volume is held constant. This can be expressed as:
\[
\frac{P_1}{T_1} = \frac{P_2}{T_2}
...