Hello Aspirant,

See questions from almost all topics of class 11th and 12th are asked in JEE-Main in different proportions but we can consider the topics as important topics who have greater weightage as compared to others so according to the higher weightage important topics for JEE-Main Mathematics as well as Physics and Chemistry are enlisted below :-

@Mathematics

1. 3-dimensional geometry & vectors

2. Determinant and matrices

3. Sequence and series

4. Straight line & circle

5. Probability distribution

6. Definite integrals & Area under the curve

7. Limits, continuity, Differentiability

8. Application of derivatives & conic sections

9. complex numbers & quadratic equations

10. Binomial theorem.

@Chemistry

1.Atomic structures

2.Gaseous and liquids

3.Electro chemistry

4.chemical kinetics

5. Nuclear and surface chemistry

6. Chemical bonding & d block elements

8. Co ordinate compound & Alkali halides

9. Thermodynamics,P block elements & General organic chemistry

10. Isomerism,Aldehydes and ketones.

@Physics

1. Heat & Thermodynamics

2. Ray optics & Electro magnetic waves

3. Semiconductor & wave optics

4. Gravitation

5. Photoelectric effect ,Rotation,Kinematics& Electro statics.

6. Current Electricity & capacitor

7. Properties of matter

8. Magnetic effect of current & magnetism

9. Bohrs atomic model

10. Waves & sound.

You can also check out the JEE-Main knockout package for preparation of JEE-Main from the link given below :-

https://learn.careers360.com/knockout-jee-main-april/?product=27&icn=knockout-jee-main-2021-january&ici=

I hope this information helps you.

Good Luck!!