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The recorder used in spectrophotometers has ______ chart speeds.(a) three(b) five(c) seven(d) nineI have been asked this question during an interview.Query is from Pneumotachometers topic in portion Pulmonary Function Analysers of Biomedical Instrumentation

Answer»

The correct option is (C) seven

For explanation 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.



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