A PhD is the highest academic qualification designed for students who want to pursue advanced research in a specific field. The PhD course duration typically ranges between 3 to 6 years depending on the subject university regulations and the student’s pace of research. In some cases part-time PhDs may take even longer extending up to 7–8 years. The first year of a PhD program usua... https://www.aimlay.com/phd-course-duration-india-usa-us-iit/