Question Bank NAT • 2 Marks Section 4: Quantum Mechanics Schrodinger equation

QB_PH_118: Schrodinger equation

Question Statement

For a particle in a 3D cubic box, the degeneracy of the first excited state ($E \propto n_x^2 + n_y^2 + n_z^2 = 6$) is:
Correct Answer
3, 3
Verified Key

Step-by-Step KaTeX Derivation & Detailed Explanation

### Solution: States $(2, 1, 1), (1, 2, 1), (1, 1, 2)$ yield 3-fold degeneracy.
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