Hi aspirant,

As you have mentioned that you are in 9th standard and are currently diving into preparing for JEE .

See, it is very good to start as early as possible but if you are fully aware and well known about your interets and future scope then definitely it is better to go for it.

Also, there are various important chapters in ohysics for class 11th . These are:

• Electricity
• Magnetism

See, these chapters are crucial as it covers the major portion of class 11th syllabus. There are various force and motion  related chapters that are also important for JEE preparation.

I hope this information will help you. Also, check out this link for more details: https://engineering.careers360.com/exams/jee-main

Thank you and good luck:)