The difficulty of studying and taking the postgraduate entrance examination in physics department (normal class), as well as the curriculum. Does math have to be good?
Physics undergraduate teachers usually study advanced mathematics I and II, mathematical physics methods, linear algebra, especially calculus, which is the basic skills of physics. If you want to take the postgraduate entrance examination, it depends on the direction you choose. If you are theoretical, you should take advanced mathematics. If you want to transfer to engineering, you will also take linear algebra. In fact, in the final physics, the requirements for mathematics are very high. Almost all formulas and theories come from mathematics. If you want to teach college physics, you must pass math.