A gas absorbs photon of wavelength $$355$$ nm and emits at two wavelengths. If one of the emissions is at $$680$$ nm, the other is at

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Infinity Learn · Accepted Answer

Energy values are additive                          $$E=E1+E2$$                         $$hv=hv1+hv2$$                         hcλ$$=hc$$λ$$1+hc$$λ$$2$$ ∴                     $$1$$λ$$=1$$λ$$1+1$$λ$$2$$                          $$1355=1680+1$$λ$$2$$ ∴                     $$1$$λ$$2=1355-1680=1.3463$$×$$10-3nm$$                           λ$$2=743$$ nm

A gas absorbs photon of wavelength 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at

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