Hello Kshitij
The minimum marks refer to the cutoff which varies as per the various categories and quotas. It is also the minimum number of marks one needs to score to be eligible to appear for JEE Advanced. As per the cutoff, it is declared along with the result of JEE Mains.
Hope this helps ! 

Hi kshitij, 

           The minimum marks that are required to pass the jee mains is known as cutoff of jee mains. The cutoff for different  category is there. This is the minimum you need to score to pass the jee main examination.