Prof. Harish Chandra Verma was a Professor in the Department of Physics at Indian Institute of Technology, Kanpur. Prior to joining IIT Kanpur, he served Science College, Patna University (1979-1994) as Lecturer and Reader. His research interests are in Nano fabrication using focused ion beam, Magnetism in Graphite on irradiation by ion beam, Nanosize (4 nm-20 nm) magnetic materials, Fe-based alloys, Earth Science etc.
The book is a great help for students with goals from school examinations to IIT. The level of questions is perfectly chosen so that it's neither too hard or too easy, so every question increases the interest to solve even more.