What is used for the measurement of unabsorbed radiant energy in spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemI have been asked this question in unit test.This intriguing question comes from Pneumotachometers topic in chapter Pulmonary Function Analysers of Biomedical Instrumentation

What is used for the measurement of unabsorbed radiant energy in spect

1.	What is used for the measurement of unabsorbed radiant energy in spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemI have been asked this question in unit test.This intriguing question comes from Pneumotachometers topic in chapter Pulmonary Function Analysers of Biomedical Instrumentation
Answer» Correct answer is (d) Detecting system Easiest EXPLANATION: An optical system for producing a parallel beam of FILTERED light for passage through an absorption cell (cuvette). The system may include lenses, mirrors, slits, diaphragm, etc. A detecting system for the measurement of unabsorbed RADIANT energy, which could be the human eye, a barrier-layer cell, phototube or photo-multiplier TUBE.

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