If you use NCERT for theory, use the GRB Numerical Physics book specifically for its diverse problem bank.
Start with the "Atoms" and "Nuclei" chapters.
, is a highly regarded resource for JEE Main and Advanced. The series is known for its multi-level problem sets that cater to students starting from basic fundamentals and progressing to high-rank advanced logic. Core Offerings for JEE Aspirants GRB Objective Physics (1st & 2nd Year)