A certain dye absorbs lights of \(\lambda= 400nm\) and then fluorescence light of wavelengt...

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A certain dye absorbs lights of \(\lambda= 400nm\) and then fluorescence light of wavelength \(500 nm\). Assuming that under the given condition, \(40 \%\) of the absorbed energy is re-emitted as fluorescence, the ratio of quanta absorbed to the number of quanta emitted out is:
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