Hello Aspirant,

Yes you can study any branch irrespective of the subjects you choose.In OUAT you can choose PCM,PCB and even PCMB and in no way it is going to affect your choice for branch selection. Under PCMB Along with physics,chemistry the best between Mathematics or Biology will be considered for ranking.So you have the option to choose any branch on the basis of your rank.

Hope this solves your issue

Regards!