IIT JAM
Rahul 1 Asked a Question
July 16, 2021 9:58 pmpts 30 pts
  • IIT JAM
  • Chemistry (CY)

1a uu u.t ntot dm in b. a certain substance in a cell of length /l absorbs 10 per cent of the incident light. what fraction of the incident light will be absorb

1A UU U.T ntOT dm In B. A certain substance in a cell of length /l absorbs 10 per cent of the incident light. What fraction of the incident light will be absorbed in a cel five times as long ?
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  • Priyanshu kumar Best Answer
    Assuming an exponential law of the light absorption like L=L0*exp(-a*x) one gets 0.9 = exp(-a*l) from which one obtains fraction of light passing the thickness 5l as exp(-a*5l) = (...
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