Hi, I currently taking Physics: Waves, Optics, Thermodynamics, (calculus-based). There are many books that provide sample exams such as the one call Instructor's Exam File. However, I don't have the one for physics III. Can you help me by posting a sample of your instructor's exam (with solutions) so that I can practice? It will help me allot on the test... ]The one's available on the internet are not what I'm looking for... My upcoming exam is on optics (lens, thin lens, etc and diffraction/interfernce).