Hello Buddy! Hope you're doing good.

To pursue PHD after 12th you have to complete your graduation from a recognised university and after that you have to complete your masters course. After masters course you can apply for PHD if you qualify the NET exam. The minimum qualifications for admission to PHD programmes that in your bachelors you have a minimum performance of 70% marks or 7 CGPA out of 10. Similarly in masters you have to score a minimum performance of 60% or 6 CGPA out of 10.

In order to get admission in IISC, the cutoff marks for shortlisted candidates in different categories in JEE MAIN are 310 (GEN), 250 (OBC-NCL), 250(SC), 130(ST). And the cutoff ALL INDIA CRL rank for shortlisted candidates in JEE ADVANCED are 220(GEN), 5000(OBC-NCL), 12000(SC), 38705(ST). This data may vary as this data is from past cutoffs.

The keys points for the upcoming JEE at this time is only your consistency and paper solving. Hope this will help you.

ALL THE BEST! WORK HARD !!