Suppose we have reason to consider that a certain quantum system has only three quantum states. When we excite such a system we observe that it emits electromagnetic radiation of three different energies: 2.43 e'u' (green), 1.91 at! [orange] and 15? elu" {infrared}. [bl {2 marks} alculate the energy of the 2.43 e'u' photon in Joules and use a calculation to show the photon is green. to} [4 marks} Propose two possible energy leyel diagrams for this quantum system and demonstrate that they both emit the three photon energies listed above. {d} {It marks} Describe and explain an experiment. based on measuring the absorption spectrum of the system prepared in an appropriate ma nner+ the results of which will distinguish which of the two proposed energy level diagrams is the oorrect one