Students who are weak in maths and solving numerical problems must concentrate on the theory chapters such as Communication, Electromagnetic waves, Dual nature of radiation and matter, Atom, Nuclei, and Wave optics. These chapters are completely theoretical, and students can score more marks here. So, concentrate on these chapters while preparing.
Also, they can focus on Devices such as Galvanometer, Cyclotron, Potentiometer, Transformer, Meter Bridge, and AC generator as it constitutes the theory part. Students who like to solve numerical problems must focus on the first part of the Physics book, which consists of chapters like Electric charge and fields, Electrostatic potential and capacitance, Current electricity, moving charges and magnetism, etc. They can also study the chapter depending upon the weight age of marks allocated to it.