Which of the following component is used to produce a parallel beam of filtered light for passage through an absorption cell(cuvette) in spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemThe question was asked at a job interview.My question is based upon Pneumotachometers in division Pulmonary Function Analysers of Biomedical Instrumentation

Which of the following component is used to produce a parallel beam of

1.	Which of the following component is used to produce a parallel beam of filtered light for passage through an absorption cell(cuvette) in spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemThe question was asked at a job interview.My question is based upon Pneumotachometers in division Pulmonary Function Analysers of Biomedical Instrumentation
Answer» The correct answer is (a) OPTICAL system 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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