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  4. White light is passed through a dilute solution of potassium permanganate. The spectrum produced by the emergent light is

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Q. White light is passed through a dilute solution of potassium permanganate. The spectrum produced by the emergent light is

AFMCAFMC 2008

Solution:

when light is passed through the solution then some part of the complete electromagnetic spectrum will be absorbed by the solution. So, the emitted spectrum will have some missing $E.M$. waves of frequency corresponding to what has been absorbed by the solution. So, the emergent light produced will be Band Absorption Spectrum.