National programme on technical enhanced learning

you can download vedeo lectures almost all technical subjects including physics matters prepared by IIT PROFESSORS. Go to http://www.youtube.com/watch?v=sUutDs7FFeA&feature=channel    
  Or  http://www.nptel.iitm.ac.in/. try and comment on it

Ac circuits powerpoint presentation prepared by my students. Pls try and comment
http://www.4shared.com/document/3BHU3GOh/AC_circuits.html

wave optics

http://www.box.net/shared/c1ptd3556b