It will be hard but probably not impossible. Try to augment your profile especially in the field of Physics that you are interested in by attending some important conference (preferably one of international range) or doing other related activities. For example you could study an advanced topic related to your area of interest and mention it in your sop in order to show your interest. Of course, the specialization of the master that you are interested in is important as well. For example doing theoretical/mathematical physics is quite demanding and competitive whereas in atmospherical physics it is a bit easier to be admitted.
All in all, if your low gpa reflects a lack of interest in Physics, I would advise you to hold back from a master. But if there were other reasons involved and you are passionate about what you do, you will be able to overcome all the obstacles.