A PhD in physics typically requires a strong academic record, with a GPA of at least 3.0, and often higher for competitive programs. Tuition for PhD programs is usually waived in the US, with students receiving stipends for teaching and research, while European costs vary significantly. Most programs involve coursework before focusing on research, and access to university facilities is generally expected for experiments. Career prospects post-PhD can be challenging, with many graduates facing stiff competition for academic positions, and alternative roles often not utilizing specialized skills. It is crucial for prospective students to consider their long-term career goals and choose research projects that align with industry needs or academic aspirations.