JAMB - Physics (2023 - No. 22)
Which of the following thermometers measures temperature from the thermal radiation emitted by objects?
Pyrometer thermometer
Platinum resistance thermometer
Thermocouple thermometer
Constant pressure gas thermometer
Explication
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.