IR sensor with Arduino

What does IR stand for in "IR sensor"?

• Infrared

• Internal Reflectance

• Input Receiver

• Infrared Receiver

What type of electromagnetic radiation does an IR sensor detect?

• Ultraviolet

• Visible light

• Infrared
  

• X-rays

Which pin of the Arduino Uno is commonly used to read digital signals from an IR sensor?

• Analog pin

• 5V pin

• Ground pin

• Digital pin

What is the typical output of an IR sensor when it detects an obstacle?

• High voltage

• Low voltage

• Analog signal

• PWM signal

Which Arduino function is used to read the digital signal from the IR sensor?

• analogRead()

• digitalRead()

• pulseIn()

• readIR()

Which type of obstacle is NOT usually detected well by IR sensors?

• Transparent objects

• Metallic objects

• Reflective surfaces

• Opaque objects

How can the sensitivity of an IR sensor be adjusted?

• By changing the input voltage

• By adjusting the potentiometer on the sensor module

• By changing the frequency of the emitted infrared light

• By changing the digital pin

What is the primary purpose of interfacing an IR sensor with Arduino for obstacle detection?

• To regulate pedestrian traffic

• To enhance the aesthetic appeal of intersections

• To provide illumination during the night

• To detect obstacles in automated systems

In the Arduino IDE, which menu option is used to upload the program for interfacing IR sensor with Arduino Uno?

• File > Upload

• Sketch > Upload

• Tools > Upload

• Edit > Upload

What is the purpose of using an IR sensor in a line-following robot?

• To detect obstacles

• To measure temperature

• To follow a specific path

• To generate sound signals