Question

In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters?

(a) Transmittance

(b) Absorption

(c) Wavelengths

(d) Volume

I have been asked this question by my school teacher while I was bunking the class.

My query is from Single Beam and Double Beam Instruments topic in section Colorimetry and Spectrometry of Analytical Instrumentation

Answer 1

Right option is (a) Transmittance

To explain: In photometers, the reading is initially obtained in the form of transmittance as some radiation is absorbed by the sample and the rest of the beam is transmitted. This transmitted beam is measured by the detector.