Hiii

Both the subjects have different opportunities an different salaries. You can first start with Bsc and then go for higher studies like MSc and PhD. 
You can have opportunities like professor in a university, research scientist, you can even get job in Govt and private Laboratories.
In physics you will become a physicists and you can get into nuclear physics experimentation or quantum physics or other different branches of physics.
In mathematics you will be a mathematician and work for any research organisation for experimentation in maths or you can work as a lecturer and professor.
So you have to choose on the basis of your own interest. Both the fields are very good

Thanks!!

Hello abhishek,
Both physics and maths have good oppurtunities getting good ranks .
I will explain both choices .
Regarding physics,you should be thorough of electromagnetism, magnetic and electric fields ,motion,matter ,kinematics,scalar and vector quantities and most important one is the laws of motion .
Regarding maths, a deep practice of problem solving is important to get top ranks .if you are very good at numerical solving and finding appropriate answers in solving equations ,it is very good platform subject to get top scores .
So i suggest,physics is the best one , only. It needs understanding and wants to predict the subject in real time .
Hope this helps ,
Thank you