Question

The recorder used with spectrophotometers has _____ wavelength scanning speeds.

(a) one

(b) two

(c) three

(d) four

I got this question during a job interview.

I want to ask this question from Pneumotachometers in division Pulmonary Function Analysers of Biomedical Instrumentation

Answer 1

Right answer is (d) four

To explain I would say: The recorder used with spectrophotometers have four wavelength scanning speeds (100, 50, 20 and 5 nm/mm) and seven chart speeds (10, 5, 2, 1, 0.5, 0.2 and 0.1 inch/mm). It has a sensitivity of 100 mV absorbance units or 100 mV/100% T.