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A proton of mass ,mp, (given in data) is confined in a very-deep Square-well potential with L= 1 femto meter.

(I) Sketch a diagram to show the allowed energy levels of the proton inside the well.

(ii) Estimate ground-state energy of the proton.

(iii) If the proton somehow gets excited to n= 3 level and then jumps back to n=1 determine the energy and wavelength of the emitted gamma-ray photon.

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