A particle is confined in a box of length L as shown in the figure. If the potential is treated as a perturbation, including the first order correction, the ground state energy is ħ²π² Vo (a) E = + Vo (b) E: ħ²π² 2mL² 2mL² ħ² π² ħ² r² (c) E = (d) E= - 2mL² 2mL² + Vo 0 4 - + ON 2 L/2
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