Test: Temperature - Mechanical Engineering MCQ

The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other. ... This says in essence that the three bodies are all the same temperature.

0 - 660°C → Platinum resistance thermocouple -190 to 0°C → Platinum-platinum/Rhodium Thermocouple > 1063°C → Planck’s law of thermal radiation.

The mercury-in-glass or mercury thermometer is a thermometer that uses the thermal expansion and contraction of liquid mercury to indicate the temperature. Mercury-in-glass thermometer for measurement of room temperature.
 

• Zeroth law - concept of temperature
• First law - concept of internal energy
• Second law - concept of entropy

Correct answer is D. -273.15
Absolute temperature equals -273.15 degrees Celsius. The lowest point of the Kelvin scale is zero just like other scales measuring temperature. There is a slight difference between zero on the Kelvin scale and other scales.