Physics

See on the website its specified that a person will be eligible for admission only if the candidate secures at least 90% marks in all his board subjects (of course excluding Hindi in your case), so maybe your physics marks mess up your chances of getting admitted in that particular college.
Best of luck.

Graphic Era University is one of the best universities in North India which provides the students to learn from a highly experienced faculty and let them learn in a world-class infrastructure with good labs. The University organizes various seminars and guest lectures for the students to expand their horizons. Besides, it offers good placements for students. It depends on the student as an individual to grab the placement opportunities available at their disposal. All the best!

You won't told me you are in intermediate level calculate in that manner.

May be Dena hoga as per the curriculum of the jnu.

Kindly visit the link:
https://www.shiksha.com/science/articles/how-to-prepare-for-top-msc-entrance-exams-blogId-13489