A mercury-in-glass thermometer is calibrated using the standard lower and upper fixed points on the Celsius scale. Which of the following describes these two fixed points?
The minimum and maximum limits of the graduated glass scale.
The temperature of melting ice and the temperature of steam above boiling water, both at standard atmospheric pressure.
The temperature of absolute zero and the triple point of water.
The start and end positions of the mercury column inside the capillary tube.
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.