Hello, 

As per your requirement, i would say that yess you are definitely eligibke for cat.

As you have completed bsc physics so your degree is done, now you can attempt your cat exam and get into mba.

A candidate is eligible to appear in CAT 2019 if he/she holds a Bachelor's Degree with at least 50% marks or equivalent CGPA. The candidates belonging to Scheduled Caste (SC), Scheduled Tribe (ST) and Differently Abled (DA) categories, need at least 45% marks.

https://bschool.careers360.com/articles/cat-eligibility-criteria/amp#aoh=15676180547661&referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s

Good luck