Which of the following is mainly used to the light intensity and optical properties in a UV spectrophotometer?
A
Photometer
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B
Monochromator
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C
Diode
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D
All of the above
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Solution
The correct option is A Photometer UV spectroscopy is a type of absorption spectroscopy in which light of ultra-violet region is absorbed by the molecule resulting in the excitation of the electrons from the ground state to higher energy state. A photometer is a part of a UV spectrophotometer and measures light intensity or the optical properties of solutions. Thus the correct answer is option A.