Focus on Newton’s Laws of Motion, Conservation of Momentum, Fluid Mechanics, Kirchhoff's, Biot and Savart's Ampere's law.
Important Topics for JEE Main Physics:
Also, study the Photoelectric effect, Bohr H atom, De Broglie wavelength, Reflection and refraction and Young's double-slit experiment.
Important Topics for JEE Main Physics:
Focus on the Conductivity and conductance, Faraday's and Kohlrausch's laws, Nernst equation, Laws of thermodynamics, enthalpy and entropy.
Important Topics for JEE Main Chemistry:
Study the Arrhenius equation, Order of Reaction, VSEPR, Molecular Orbital Theory, Nomenclature, Isomerism and Colouration.
Important Topics for JEE Main Chemistry:
Focus on the Order of matrices, Multiplication and Transpose conjugate of a matrix and properties, Probability, Permutation & combination, and Bayes' theorem.
Important Topics for JEE Main Maths:
Practise numerical from Section Formula, Centroid, Coordinate Axes, Definite Integrals and Vectors and 3D Geometry.
To be well prepared, it is important to have a glance over other topics too.