Hi Dear,

As per the details given, If you have completed MSC in Physics then you have alreasy done your Post graduation in physics. To be eligible for M.Sc. in Earth Science the minimum qualification for a student is a B.Sc. in Geology or related. Since you have done your graduation in physics you cannot go for masters from earth science.

For more details visit the following link:

https://www.careers360.com/courses/earth-science-course#:~:text=Eligibility%20Criteria%20for%20PG%20Courses,for%20entrance%20exams%20like%20GATE.

Good Luck