The relationship between the absorbance of light by a solution and the concentration of the solution should be linear , so that when concentration increases, absorbance increases
We solve this from the Beer's law equation stated below:
A=Ebc
Where, A=absorbance
E=molar absorptivity
b=path length
c=concentration
Hence we can conclude from the Beer's law equation above that absorbance(A) is directly proportional to concentration(c) that is absorbance of a light by a solution is directly proportional to the concentration of that solution, where molar absorptivity can be constant for a given substance.
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