I am an undergraduate student of electronics and telecommunication engineering in a govt. college in India. But I am extremely interested in physics and mathematics. I want to pursue a research career in physics and mathematics. I generally receive suggestions like taking the GRE test. But I have the following questions:
What is the minimum amount of physics I am supposed to have mastered at the end of my engineering?
How much of physics or physics related subjects should I have in my UG course?
How much is an adequate grade (What puzzles me most is that if I am intending to do physics why should my grades in engineering should be considered?)