1. Maitreya Modern School, Koradi Road, Bokhara Nagpur Maharashtra 441111 India
2. Department of Physics (Formerly) Institute of Science Nagpur Maharashtra 440001 India
3. Department of Physics Annasaheb Vartak College of Arts K.M. College of Commerce and E.S. Andrades College of Science (affiliated to University of Mumbai) Vasai Road (w) Palghar Maharashtra 401202 India