Which of the following thermometers measures temperature from the thermal radiation emitted by objects?
A
Pyrometer thermometer
B
Platinum resistance thermometer
C
Thermocouple thermometer
D
Constant pressure gas thermometer
Verified Correct Answer: A.
Physical Principles & Numerical Solution
A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface. It does this by measuring the thermal radiation or infrared energy being emitted from the object. Therefore, a pyrometer thermometer measures temperature from the thermal radiation emitted by objects.
Source: WAEC / JAMB / NECO Classroom Archive (Record #67883)