Hello Balateja

The paper pattern every year is more focused on 11,12 1st year, physics problems and concepts that is all for cracking a iit jam in physics but if you want to get a good rank then go for 11,12,1st year,2nd year,3rd year physics and thorough it completely this will surely help you getting an AIR less than 500 but if you want more than more concentrate yourself on your problem solving abilities.