The resistances of a platinum resistance thermometer at the ice point, the steam point and the boiling point of sulphur are `2.50, 3.50 and 6.50 Omega` respectively. Find the boiling point of sulphur on the platinum scale. The ice point and the steam point measure `0^0 and 100^0` respectively.

Explanation

To find the boiling point of sulphur on the platinum scale using the given resistances of a platinum resistance thermometer, we can follow these steps:

### Step 1: Identify the given values
- Resistance at the ice point (R0) = 2.50 Ω
- Resistance at the steam point (R100) = 3.50 Ω
- Resistance at the boiling point of sulphur (RT) = 6.50 Ω

### Step 2: Use the formula for temperature measurement
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