I'm not sure why you are addressing PM's comment using the outdated Bohr's model. Why aren't you using the standard QM approach that we teach to every physics undergraduate students? Is there something wrong with that?
Secondly, I don't need to cause a "real" transition only when "electron absorbs a real photon". I can bombard an atom with electrons and cause such an excitation. Your fluorescent light bulb works this way. What this means is that how you excite an atom is irrelevant. If you can sneeze at it to cause a transition, then that works too. I also don't think you should be using "virtual transition" as an explanation for this, especially since you are still using the Bohr model. Keep in mind the rules against over speculative posting.