Engineering to pure Physics

[kini.Amith]

I am currently doing my 2nd year in Btech ( Indian equivalent of BE) in mechanical engineering.
however I have always wanted to be a physicist (research or professor) mainly theoretical physics and not engineering .There is such a hype over engineering in India and that's why i chose BTech in the first place. Is there any way i can now convert to pure science? what should i choose as my masters (and further) in order to pursue physics?

 

[Mépris]

I'm not sure about this - I'm not even from India - but if you're in IIT-K, I think you can transfer to Physics, do a dual major or a minor in it.

http://www.iitk.ac.in/math/BS_Program.pdf [Broken]