hi,

see cutoff score changes every year and it depends on some of the major factors like number of applicants, questions difficulty level, seat matrix, students category , choice of stream and so on. however at this score it is difficult to secure top iits, however you may apply for Jadavpur university, nit suratkhel, nit kalicut, bits pilani, iiest shivpur.

you may follow the below link to know about colleges which offer this course in India:

https://university.careers360.com/colleges/list-of-phd-in-physics-universities-in-india