I am preparation of NEET 2019 but base of my physics is not clear . You are considering my physics have zero base

Dude, physics is the essence. All the three subject are. You can't go to the exam with zero base in any of the subject. But its last week, and you can not go to exam like this, start now and learn some basics, some simple questions which are easy and appear in exams usually. Try attempting questions in which you are confident that you are doing it right because you can not afford any negative marking in physics. Now if your physics is week then you have to be very very good at the other two subjects you habe to gain maximum marks as possible in these two.
Good luck