The special features of spectrophotometer includes
A
Spectral bandwidth
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B
Percentage of sample-transmission
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C
Logarithmic range of sample absorption
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D
All of the above
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Solution
The correct option is B All of the above In a spectrophotometer, the spectrometer produces the desired range of wavelength of light from a wide range of wavelengths. Transmittance (T) is the percentage of sample transmission and is defined as the fraction of light that passes through the sample. It is related to absorption by the expression
Absorbance(A)= --logT=--logIt/Io, where It is the amount of light transmitted and Io is the amount of light incident on the cuvette solution.