What can I study when I'm strong in Biology, Chemistry, Computer but weak in Physics?
If you want to pursue medical science, then again you'll have to study physics in school.
The only way of 'escaping' physics will be by choosing the commerce stream, which I don't think k you want to.
I'd say, study PCB in high school, and in Medical entrance exams, the physics is not very tough. You'll get to the level required easily if you focus on basic concepts.