Question

The type of sensor that detects the analyte species directly through their characteristic spectral properties is called _____________

(a) chemical sensor

(b) thermal sensor

(c) light sensor

(d) spectroscopic Sensors

I had been asked this question in examination.

Asked question is from Optical Fiber Sensors topic in portion Physiological Transducers of Biomedical Instrumentation

Answer 1

Correct option is (d) spectroscopic Sensors

Easy explanation: Spectroscopic Sensors is the one that detects the analyte species directly through their characteristic spectral properties. In these sensors, the optical fibre functions only as a light guide, conveying light from the source to the sampling area and from the sample to the detector. Here, the light interacts with the species being sensed.