MCQ Answer

What type of sensor is used in a smartwatch to monitor heart rate?

What type of sensor is used in a smartwatch to monitor heart rate?

हार्ट रेट की मॉनिटरिंग के लिए स्मार्टवॉच में किस प्रकार के सेंसर का यूज़ किया जाता है?
Topic : Sensors, Actuators and Microcontrollers

A. Optical sensor ऑप्टिकल सेंसर

B. Ultrasonic sensor अल्ट्रासोनिक सेंसर

C. PIR sensor पीआईआर सेंसर

D. Pressure sensor प्रेशर सेंसर




Correct Answer is :

A. Optical sensor



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