O Levels Physics (5054)•5054/12/M/J/21

Explanation
Thermometric Properties Steps:
- Mass remains constant with temperature changes, so it cannot measure temperature.
- Resistance varies with temperature, as in resistance temperature detectors (RTDs) using the formula R = R0(1 + αΔT).
- Voltage is generated proportional to temperature differences in thermocouples via the Seebeck effect.
- Volume expands with temperature in liquids or gases, following Charles's law (V ∝ T). Why C is correct:
- Resistance, voltage, and volume each change predictably with temperature, allowing direct measurement through defined physical laws like thermal expansion and the Seebeck effect. Why the others are wrong:
- A: Underestimates, as three properties enable temperature measurement.
- B: Underestimates, ignoring the third viable property.
- D: Overestimates, since mass is invariant with temperature. Final answer: C
Topic: Physical quantities and measurement techniques
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