Q. A device used to detect heat radiation is known as:

A
Barometer
B
Thermocouple
C
Thermopile
D
Thermoelectric generator
Solution:

A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming electrical junctions at differing temperatures. A thermocouple produces a temperature-dependent voltage as a result of the thermoelectric effect, and this voltage can be interpreted to measure temperature. Thermocouples are a widely used type of temperature sensor.

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