can anyone suggest me institutes offering winter internship in physics
I don't know what you mean by winter term, and I also don't know your location, citizenship, student status, or area of interest, but I thought these links may help you. Good luck!
Sandia National Labs Physical Sciences Institute (PSI)
Federal Bureau of Investigation (FBI) Counterterrorism/Forensic Science Research Unit
NASA Education Associates Program
NSERC Northern Research Internships
Most major companies hire student interns year-round.
Fall and Spring term:
Department of Energy (DOE) Science Undergraduate Laboratory Internships
NASA Undergraduate Student Research Program (USRP)
Oak Ridge National Laboratory (ORNL) Higher Education Research Experiences (HERE)
Oak Ridge National Laboratory (ORNL) National Energy Technology Laboratory Professional Internship Program
Fall and Winter term:
National Science Academies Science & Tech. Policy Graduate Fellowship Program
All gotten from the physics Student Opportunities listing at http://www.astromiror.org/opportunities.html .
Separate names with a comma.