The wavelength used when taking measurements with a spectrophotometer should be one where: O all the substances found in the cuvette absorb light strongly O the substances other than the one being measured absorb light strongly. O only the substance being measured absorbs light strongly the solvent absorbs light strongly. Submit Answer Try Another Version 1 item attempt remaining Solution The wavelength used when taking measurement with spectrophotometer should be one where Answer = only substances being absorbed light strongly Becose of spectrophotometry is method of measurement of how much chemical substance absorbed light by measuring intensity of light as beam of light passing through a sample of solution .Each substan absorb certain light so identify componant by measuring absorption .... for measurement of solution concentration solvent does not absorbed light... cuvette contain solvent & substance but only substance absorb light not all found in cuvette absorbed light. .