Resistance Thermometers

Q.

The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at ${10}^{\circ }Cand{100}^{\circ }C$. The temperature at which the resistance is 3.26 ohm is

1. 50°C

2. 40°C

3. 60°C

4. 70°C

Q. The resistance of a platinum resistance thermometer of 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 steam point measure $0^{\circ }$ and ${100}^{\circ }$ respectively.

1. ${400}^{\circ }$
2. ${500}^{\circ }$
3. ${600}^{\circ }$
4. ${700}^{\circ }$