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JEE MAIN 2021
27-07-2021 - S2
Question
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 form a hydrogen atoms 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?
Select the correct option:
A
7.61 eV
B
1.41 eV
C
3.3 eV
D
No photoelectron would be emitted
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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