First, I'll assume you mean a Physicist, since a Physician is a doctor and that has nothing to do with Physics.
Don't expect to get into those colleges. It is definitely possible and depending on how good you are may even be pretty likely, but don't rely on it. Apart from being VERY expensive, they are among the hardest to get into in the world, especially for Physics. You know how choosy moms choose Jif? Cambridge and MIT are even choosier. 98th or 99th perecentile SAT scores will be common among those who do get in, but past that I don't know exactly what the qualifications are.
To address the main question, there is no best college. There are many factors beyond a college's prestige, like cost and location and chance of admission. Thoroughly research all aspects of colleges you would think about going to. Good Luck!