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Dual Nature of Matter and Radiation Part 1

Section: Physics

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Question : 9 of 100

Marks: +1, -0

An electron and proton are separated by a large distance. The electron starts approaching the proton with energy 3 eV. The proton captures the electrons and forms a hydrogen atom in second excited state. The resulting photon is incident on a photosensitive metal of threshold wavelength 4000 Å. What is the maximum kinetic energy of the emitted photoelectron?

[27 Jul 2021 Shift 2]

7.61 eV
1.41 eV
3.3 eV
No photoelectron would be emitted

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