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21-11-2021 Pneumotachometers

Q. What is used for the measurement of unabsorbed radiant energy in spectrophotometer?

A. Optical system
B. Radiating source
C. Filtering Arrangement
D. Detecting system

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Dapzoi Verified
Commented on 2021-11-21 12:23:06 (IST)
Answer: D

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.