Concepts of Physics Volume-2 by HC Verma is an excellent form for students who want conceptual clarity of Physics. It has been used by students for more than two decades. The book contains quite interactive theory and ample amount of questions. I personally found the theory to be quite useful for developing concepts. The questions are graded to cater to the needs of conceptual understanding of the subject. The book is in good condition and easily readable. I am selling it because I have passed the exam for which I bought it.