A certain dye absorbs light of `lambda = 4000 "Å"` and then flurescences light of `lambda = 5000"Å"`
Channel: Doubtnut
Date: 2020-04-19

A certain dye absorbs light of `lambda = 4000 "Å"` and then flurescences light of `lambda = 5000"Å"`  . Assuming that under given conditions 50 % of the absorbed energy is re-emitted out as fluorescence , calculate the ratio of the number of quanta emitted out to the number of quanta absorbed :