Electrons Are in a Two-Dimensional Square Potential Energy Well with Sides

question 11

Multiple Choice

Electrons are in a two-dimensional square potential energy well with sides of length L. The potential energy is infinite at the sides and zero inside. The single-particle energies are given by where n_x and n_y are integers. The number of single-particle states with energy 5(h²/8mL²) is:

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5

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