Quantum Mechanics: PHAS0042, Autumn 2019Problem Sheet 4Use Dirac Notation For All These Questions, Except Where Indicated.1. Consider An Infinitely Deep Square Well Lying Between X = 0 And X = A (So That The Potential Is Infinite For X &< 0 Or X &> A And Zero For 0 &< X &< A), With Eigenfunctions Φn