Textbook in PDF format These two volumes are an ideal resource for advanced physics students preparing to progress to the PhD level, offering a carefully curated selection of intellectually engaging and pedagogically valuable problems spanning the breadth of the subject. Each problem is accompanied by a fully worked, detailed solution designed to illuminate problem-solving strategies, clarify conceptual pitfalls, and highlight key take-home messages. The selection of problems reflects emerging trends in physics pedagogy and topical domains of study. These volumes are as much a training ground for problem-solving habits essential to research careers as they are a resource for examination preparation, emphasizing clarity, strategy, and analytical depth