Chemistry - Atomic Structure Question with Solution | TestHub
ChemistryAtomic StructurePhotoelectric EffectMedium2 minQB
ChemistryMediumsingle choice
A photon of energy 3.0 eV is absorbed by an electron inside a metal whose work function is 2.0 eV. Which statement is correct?
Options:
Answer:
B
Solution:
The electron has 3.0 eV, but it may lose energy in collisions on the way to the surface.
So it is not sure to leave (A is wrong) and the 3.0 eV is reduced by the work function at least (C is wrong).
Because 3.0 eV > 2.0 eV the electron can leave (D is wrong). If it leaves, its kinetic energy is at most 3.0 - 2.0 = 1.0 eV.
Answer: (B).
Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:Photoelectric Effect
⏱ 2mℹ️ Source: QB
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