Yes, IIT Bhubaneswar provides students with a chance of foreign internships for research-based programs like MSc Ph.D. in Physics. It has collaborations with the University of Texas, North Denton, Texas USA, University of Edinburgh, UK, University of Western Ontario, Canada, Partnership with Warwick Manufacturing Group UK, etc. Also, countries like Germany, the USA, etc. offer students to work in Research institutes, Defence labs, etc.

Applicants with 9-10 CGPA have a better chance of getting selected into a foreign internship program in MSc Ph.D. in Physics. Also other than CGPA, there are other factors for their selection which include obtaining relevant research backgrounds, projects before the competition of the 2nd or 3rd year of the course.

Applicants with 6-9 CGPA also get opportunities for foreign internships through their relevant research of the subject, projects. Keeping in touch with the professors or institution will guide you through the whole process.

NITs are generally much better than Cochin Institute Of Science & Technology (CUSAT) as they receive higher funding, seminar, workshops, facilities and have reputed international Scientists. They include -

• Funding in the institution

The funding is straight from the government and therefore tends out to be more advanced in terms of technology and curriculum. All facilities are provided in order to make it a global course.

• International Collaborations

The NIT across the nation are actively engaged in seminars/workshops that allow its candidates to have a great exposure towards good & eminent scientists across the globe.

CUSAT can compete with NOT only on the grounds of the Physics department as it is the only department that fulfils the criterion of good faculty and advanced projects in a general sense. The major areas to look up to are :

• They try to interact with institutions like NCL, NIIST, Inter University Accelerator Centre New Delhi, IWATE University Japan.
• There are almost 205 PhDs and approximately 1100 publications in international/ national journals.
• Five Indian patents have also been filed within the department.

CUSAT gives you good opportunities but when it comes to choice between CUSAT & NIT ; surely the latter will be more preferable.

A senior I know from school completed M.Sc in physics and in his opinion, the University of Calcutta is the best place to pursue this course. 

• 70% marks in B.Sc (Hons) in Physics is required to pursue this course at the University of Calcutta.
• In the University of Burdwan, the faculties of the department of Physics had individually obtained some major research projects from funding agencies like DST, ARDB, ISRO, UGC, BRNS, CSIR, etc. and all these projects were completed successfully. 
• For admission to the University of North Bengal, you need to have at least 50% in B.Sc (Physics). The department has active research groups in the fields of - Liquid Crystal; Relativity, Cosmology, and Astrophysics; High-energy Heavy-ion Interaction, and Cosmic-ray Physics. 
• In the case of Visva Bharati University, you need to score at least 50% marks in Physics Honors.

The best option among the mentioned institutions is University of Calcutta. You will be offered great opportunities here.