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cse • paper_2 • quantum_mechanicscse-2026-subject-05-009

Hydrogen atom — UPSC CSE 2026 Physics PYQ

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The electron in the hydrogen atom is found in the state \psi(r, \theta, \phi) = A\, R(r) \sin\theta \cos\theta\, e^{-i\phi}. Find the z-component of angular momentum of the electron.

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