Question

What is the use of the IR Sensor?

(a) Object Detection

(b) Humidity Detection

(c) Image Processing

(d) GPS

I had been asked this question in an online quiz.

My question is based upon IR Sensor topic in section Interfacing of Sensors, Actuators, and Other Modules of Arduino

Answer 1

Correct option is (a) Object Detection

For explanation I would say: The IR Sensor is used for calculating the distance between the sensor and the object. It is mostly used for calculating the acceleration, velocity and position of the sensor attached to the device. It basically has two terminals which emit an IR Signal and receive the emitted IR Signal. The time difference between these two gives us the required data for such calculations.