Hi Yash,

Here I am listing out topics with the highest weightage in JEE Main 2020:-

@Physics

• Modern Physics - 20 marks
• Heat and Thermodynamics - 12 marks
• Optics - 12 marks
• Current Electricity - 12 marks
• Electrostatics - 12 marks
• Magnetics - 8 marks

@Chemistry

• Transition Elements and Coordination Chemistry - 12 marks
• Periodic table and Representative Elements - 12 marks
• Thermodynamics And Gaseous State - 8 marks
• Atomic Structure - 8 marks
• Chemical Bonding - 8 marks
• Chemical And Ionic Equilibrium - 8 marks
• Solid State And Surface Chemistry - 8 marks
• Nuclear Chemistry And Environment - 8 marks

@Mathematics:-

• Coordinate Geometry - 20 marks
• Limits, Continuity and Differentiability - 12 marks
• Integral Calculus - 12 marks
• Complex numbers and Quadratic Equation - 8 marks
• Matrices and Determinants - 8 marks
• Statistics and Probability - 8 marks
• Three Dimensional Geometry - 8 marks
• Vector Algebra - 8 marks

You may refer to this article for more information about JEE Main Syllabus with Weightage

I hope this information helps you.

Good Luck!

• Mechanics:- 8 questions are asked on an average from mechanics
• Electrodynamics :-8 questions
• Modern Physics:- 5 questions
• Heat & Thermodynamics:- 4 questions
• SHM & Waves:- 3 questions
• Optics:- 2 questions

• Organic Chemistry-II i.e Alkyl Hallide, Alcohol & Ether (Reaction Mechanism),Aromatic Compounds, Biomolecules,Carbohydrates, Amino Acids ,Polymers, Carbonyl Compounds, Environmental chemistry, Grignard Reagent, Reduction, Oxidation& Hydrolysis - 10 questions are asked from these topics

• Physical Chemistry-I i.e Atomic Structure & Nuclear Chemistry,Ionic Equilibrium, Mole Concept,Thermodynamics and Thermochemistry :- 5 questions

• Inorganic Chemistry-I i.e Chemical Bonding,Periodic Table & Periodicity in Properties,S-Block : - 5 questions

• Differential Calculus:- 7 questions
• Integral Calculus:- 4 questions
• Coordinate Geometry:- 3 questions
• Co-ordinate Geometry (3-D):- 2 questions
• Matrix & Determinants:- 2 questions
• Probability:- 2 questions
• Matrix & Determinants:- 2 questions
• Trigonometry:- 2 questions