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Question: Answered & Verified by Expert
A photon of energy 15 eV collides with H-atom. Due to this collision, H-atom gets ionized. The maximum kinetic energy of the emitted electron is
PhysicsAtomic PhysicsNEET
Options:
  • A 1.4 eV
  • B 5 eV
  • C 15 eV
  • D 13.6 eV
Solution:
2547 Upvotes Verified Answer
The correct answer is: 1.4 eV
Energy of photon = ionization energy +KEmax

KEmax=15 eV-13.6 eV=1.4 eV

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