Hello Aspirant,

That's good to hear that you want to study PG physics in central university.  There are numerous central universities all over India. Which part of the country you want to get admission if you please mention. For an instance kanpur university, JNU, Banaras hindu university all are central universities.

Make sure you have to have 55% or above in your graduation level then only you'll be eligible for PG in physics. For Sc,  ST and OBC candidates the percentage is 50.

Hope it helps
All the best!