Which of the following component is used to provide a sufficient intensity of light which is suitable for making measurement in Spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemThe question was posed to me in quiz.This interesting question is from Measurement of Volume in section Pulmonary Function Analysers of Biomedical Instrumentation

Which of the following component is used to provide a sufficient inten

1.	Which of the following component is used to provide a sufficient intensity of light which is suitable for making measurement in Spectrophotometer?(a) Optical system(b) Radiating source(c) Filtering Arrangement(d) Detecting systemThe question was posed to me in quiz.This interesting question is from Measurement of Volume in section Pulmonary Function Analysers of Biomedical Instrumentation
Answer» Right CHOICE is (b) Radiating SOURCE To explain: The function of the radiation source is to provide a sufficient intensity of light which is suitable for making a measurement. The most COMMON and convenient source of light is the TUNGSTEN lamp. This lamp CONSISTS of a tungsten filament enclosed in a glass envelope. It is cheap, intense and reliable. A major portion of the energy emitted by a tungsten lamp is in the visible region and only about 15 to 20% is in the infrared region.

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