IR_Sensor

What does an IR sensor detect?

• Sound

• Infrared radiation

• Visible light

• Electric current

What are the two main components of an IR sensor?

• Resistor and capacitor

• Diode and transistor

• Emitter and detector

• LED and battery

What is the role of the IR LED in an IR sensor?

• To detect infrared radiation

• To emit infrared light

• To block infrared light

• To amplify signals

Which type of IR sensor uses both an emitter and a detector?

• Passive IR Sensor

• Active IR Sensor

• Thermal IR Sensor

• Quantum IR Sensor

What does a photodiode in an IR sensor do?

• Emits infrared radiation

• Detects and measures infrared light

• Converts heat into electricity

• Reflects infrared light

Which of the following is NOT a component of an IR detection system?

• Optical components

• Signal processing

• Sound amplifiers

• Transmission medium

In which application is a Passive Infrared Sensor (PIR) typically used?

• Line-following robots

• Motion detectors in security systems

• Infrared homing systems

• Night vision devices

How does an IR sensor measure the presence of an object?

• By detecting the sound waves reflected by the object

• By emitting infrared light and detecting the reflected light

• By measuring the visible light emitted by the object

• By calculating the temperature of the object