Question

The handheld Passive infrared Non-Contact thermometer based digital Temperature Sensor which were recently in use for screening of Covid 19 patients for measuring her body temperature are based on which of the following principle?

Select one:

a. Magnetoelectric effect

b. Thermoelectric effect

c. Piezoresistive effect

d. Piezoelectric effect​

Answer 1

Answer:

Thermoelectric effect