Yes the best boo for IIT JEE and other competitive exams.Probably the only indian with such a teacinh experience would be HC VERMA.The boo clearly gives us concept rich sentences and can be understood easily.The newer version is rechecked many times to avoid mistakes.
The book has been used by me since 2 years and is the only reason behind me for acheiving good ranks in CBSE PMT and IIT JEE.My life is successful due to CONCEPTS OF PHYSICS.
I AM GREATLY THANFUL TO SIR HC VERMA.