Q1002
Which of the following devices can be used to detect radiant heat ?
A.
Liquid thermometer
B.
Six's maximum and minimum thermometer
C.
Constant volume air thermometer
D.
Thermopile
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Based on the thermoelectric effect, the thermopile can be used as a heat sensor to measure thermal radiation. A thermopile is made of thermocouple junction pairs connected electrically in series. Thermocouples near the ground measures radiant energy.