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A thermometric property is a physical property that:
Avaries linearly and continuously with temperature
Bstays constant as the temperature changes
Ccan only be measured at the triple point
Dvaries randomly as the temperature changes
Answer & Solution
Correct answer: A. varies linearly and continuously with temperature
1. A thermometer works by reading some property that responds to temperature.
2. For that reading to be useful the property must change continuously, with no jumps.
3. It must also change linearly, so equal temperature changes give equal changes in the property.
4. Resistance in a resistance thermometer and gas pressure in a constant-volume gas thermometer both qualify.
5. A property that stayed constant or varied randomly could carry no temperature information at all.
_Source: NECTA ACSEE 2023 Physics 131/1, Question 5:Heat (Thermometers and First law of Thermodynamics)_