I have read Tsinghua's physics self-enrollment questions a few years ago, and they all think it is the difficulty of the college entrance examination. It should be said that it is biased towards knowledge and does not use advanced skills. However, in terms of heat, it is required to master the isothermal adiabatic process of equal pressure and volume, and optics only obtains the law of refraction. Generally speaking, dynamics and kinematics are more important, and there is a lot left in electromagnetism. These are all based on the difficulty of the exam. Don't be afraid.

I'm also a senior three, but the physics competition has already walked Tsinghua. Some time ago, our school distributed all the questions from previous years to the students who took the exam. Some physics questions were asked by my classmates, so I knew. I don't have this problem.

What I wrote above in physics is absolutely correct and won't harm you.