If you are a serious targeting a score of 90%+ in CBSE or a rank under 50,000 in JEE Main, buy the physical book or official e-book . The investment is minimal (cost of 2 pizzas) compared to the value it returns.
Below is a detailed breakdown of what you can expect from Volume 2, its contents, utility, and availability.
primarily covers the properties of bulk matter, thermodynamics, and waves. While Volume 1 focuses on mechanics and gravitation, Volume 2 includes the remaining seven chapters of the CBSE/NCERT curriculum. Volume 2: Chapter-Wise Content
(Hydrostatics and Hydrodynamics)