cse • paper_2 • quantum_mechanics
[UPSC CSE 2021] Foundations of Quantum Mechanics (Q16, 10M)
Normalised wave function of hydrogen atom for 1s state is \psi_{100}=\frac{1}{\sqrt{\pi a_0^3}}e^{-r/a_0},\text{ where }a_0=\frac{\hbar^2}{me^2} being the Bohr radius. Calculate the expectation value of potential energy in this state.
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