Hello rishabh,

If you were to take my opinion let me tell you that it's important for you to cover the maximum portion because you don't know which questions from which part will be easy or not.

If luck does not favour you at that point of time and by chance the questions from the 11th std topics are easy or readily solvable then you would be at a disadvantage. The total marks in physics in jee mains is 75 marks. And mostly the topics from 11th and 12th are equally divided.

Dear aspirant !

Hope you are doing great ! It is hard to score 40 to 50 marks in jee mains 2022 by just reading 12 class physics ,i will tell you the reason . See, the physics of class 12th will be of 50 to 60 marks or around it and getting 40-50 marks is hard because there will be some tough questions also which is hard to solve for you , your learning can't be 100 percent effective . So try to read class 11th physics also to get 50 marks around out of 309 , i will suggest you some chapters which are easy and most scoring ;-

-emw.

-POC.

-semiconductor.

-modern physics .

-gravitation.

-unit and dimensions.

-motion.

-ktg and thermodynamics.

-states of matter

These are easy ,do them .

For more information about jee 2022 ,visit the link ;-

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/exams/jee-main/amp&ved=2ahUKEwi0z-n6kqX3AhUsRmwGHVbpCS4QtwJ6BAgJEAE&usg=AOvVaw1I2Ka-OjYWyCZRFJnsvWez .

Hope it helps you !

Thanking you