A certain day absorbs lights of `lamda=400` nm and then fluorescence light of wavelength `500` mn. Assuming that under given condition `40%` of the absorbed energy is re-emitted as fluorescence, calculate the ratio of quanta obserbed to number of quanta emitted out.

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 :

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

A dye obsorbs light of lambda = 4530 Å and then flaorescences light of 5000Å .Assuming that uinder given condition 47% of the obserbed energy is re-emited out so flaurescence , calculate the ratio of quants emitted out to the number of quanta obserbed

A certain dye absorbs 4530A^(@) and fluoresence at 5080A^(@) these being wavelength of maximum absorption that under given condition 47% of the absorbed energy is emitted. Calculate the ratio of the no of quanta emitted to the number absorbed.

A substance absorbs electromagnetic radiations of wavelength 12.3 nm and then emits another electromagnetic radiations of wavelength 24.6 nm . If ratio of number of photons absorbed to number of photons emitted is 2:1 then ratio of energy absorbed to energy emitted will be :

A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number of photons emitted per second by the bulb.