HPCSA MedTech Board Practice Questions - HPCSA SMLTSA Medical Technology National Board Examination (South Africa) Exam

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According to the Beer-Lambert Law governing spectrophotometric analysis, which statement correctly describes the mathematical relationship between absorbance (A) and percent transmittance (%T)?

Absorbance is inversely and logarithmically proportional to percent transmittance: A = 2 - log(%T) Absorbance is directly and linearly proportional to percent transmittance: A = log(%T) / 100 Absorbance is inversely proportional to path length and molar absorptivity: A = c / (e * l) Absorbance increases exponentially as transmittance increases towards 100%

Correct Answer:

Absorbance is inversely and logarithmically proportional to percent transmittance: A = 2 - log(%T)

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