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Which sensor can detect nearby objects?(a) Proximity sensor(b) Humidity sensor(c) Touch sensor(d) Pressure sensorI had been asked this question by my school teacher while I was bunking the class.The question is from Proximity Sensor in chapter Sensors of IOT

Answer»

Correct option is (a) Proximity sensor

Best EXPLANATION: A proximity sensor is a sensor able to detect the presence of nearby objects WITHOUT any physical contact. A proximity sensor OFTEN emits an ELECTROMAGNETIC field or a beam of electromagnetic radiation, and looks for a change in the return signal.



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