I would suggest you to go through the below links for the same and let me know if you face any doubt -

Jee main syllabus

Jee advanced syllabus - Topics 1 Physics - Mechanics General Electricity and Magnetism Thermal Physics Optics Modern Physics

2. Chemistry -  Organic Chemistry Inorganic Chemistry Physical Chemistry

3. Mathematics Algebra Integral Calculus Analytical Geometry Trigonometry Differential Calculus Vectors.

Note : The above provided details is provided as per 2017 criteria.

Hope this helps!!!

You can check the detailed syllabus from the given below link-

JEE Main Syllabus

JEE Advanced Syllabus

Good Luck!!

The JEE Main 2018 syllabus announced will be for the subjects of Physics, Chemistry, Mathematics and Biology. However, the syllabus for JEE Main 2018 will contain the subject-wise topics and subtopics covered in the entrance examination, in detail for both Papers I and II.And JEE Advance topic-wise syllabus for Physics, Chemistry and Mathematics sections. You can check the detailed syllabus with given below links

JEE Main Syllabus

JEE Advance Syllabus

Good Luck!