Chapters that come in Class 10 Physics are Light-Reflection and refraction, Electricity, Energy Sources, Magnetic effects of electric current, the human eye and the colourful world.
From the chapter Light-Reflection and refraction, Ray diagrams and their image formation by lenses and spherical mirrors are essential.
Co-ordinate Geometry
Also, derivations and numerals from ray diagrams are important topics that carry 5-mark questions.
You can also get theory-based questions on the Reflection of light.
From the Human eye and colourful world, the Human eye diagram, parts and functions of the eye and defects of the eye are essential topics.
Trigonometry
In Electricity, Numericals based on Ohm's law and circuit-based questions to find equivalent resistances.
In Magnetic effects of electric current, Electric motor and Generator - Their principles, working and constructions are important topics.