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Which of the following instrument isolates monochromatic radiation in a more efficient and versatile manner than colour filters in filter photometers?

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Which of the following instrument isolates monochromatic radiation in a more efficient and versatile manner than colour filters in filter photometers?

(a) Calorimeter

(b) Colorimeter

(c) Spectrophotometer

(d) Polarimeter

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This interesting question is from Pneumotachometers topic in section Pulmonary Function Analysers of Biomedical Instrumentation

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Best answer
The correct option is (c) Spectrophotometer

The best explanation: A spectrophotometer is an instrument which isolates monochromatic radiation in a more efficient and versatile manner than colour filters used in filter photometers. In these instruments, light from the source is made into a parallel beam and passed to a prism or diffraction grating, where light of different wavelengths is dispersed at different angles.

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