Chemistry - Atomic Structure Question with Solution | TestHub
ChemistryAtomic StructurePhotoelectric EffectHard2 minQB
ChemistryHardsingle choice
A molecule absorbs a photon of wavelength 400 nm. 25 % of the absorbed energy is lost as heat and the rest is re-emitted as two photons of equal wavelength. The wavelength of each emitted photon is
Options:
Answer:
C
Solution:
Energy re-emitted = 0.75 x hc/400. Each of the two photons carries half of it: .
nm.
Traps: 533 nm is for one photon carrying 75 %; 800 nm ignores the heat loss.
Answer: (C).
Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:Photoelectric Effect
⏱ 2mℹ️ Source: QB
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