I'm not yet done with an undergrad major in physics, but through all of my physics education, I think I now recognize around 75-80% of Nobel laureates in physics. I recognize some of them more through their popular textbooks more than their research though. It's actually quite interesting though - knowing that each of them has done work whose implications are so important that their contributions inevitably end up in a textbook. How many of the chemistry nobel laureates do you recognize (if you've done chemistry?) What about physiology and medicine? (if you've done biology?) I probably only recognize around 20% of the laureates for those two fields.