查看完整版本 : Any tips for my exam?

本人聽日考PHYSICS，因為數學冇九字頭極度沮喪，唔想再輸物理。請問有甚麼tips?
Syllabus: Reflection and Refraction of light, total internal reflection, concave and convex lens (Physics At Work 3A)
本人就讀中三

Thanks!!