Philosophy

The fees is around 62k pa. The fees is subject to revision and this year it will definitely increase to around 70-75k. The university already increased its fees arbitrarily in the mid-sem and then students went for a petition. The fees was increased last year and seeing what the university has done it will increase this year too.

There were thousands of students who gave the PET. You have scored really very good.
Good luck.

Admission in Osmania University is merit-based. You must have passed 10+2 from a recognized board. For more details, follow the link given below.
https://www.shiksha.com/humanities-social-sciences/course/b-a-osmania-university-college-for-women-kachiguda-hyderabad-268027

Check in the below to link to access the previous year question paper of the JNUEE entrance exam.
https://admissions.jnu.ac.in/searchquestionpaper.aspx
Year - Put the latest available option. Select programme - M.A., MCA or M.Sc.
Select School - School of Social Sciences
Select Study Code - 094 Philosophy
With the above instructions, please follow the same process in the link to download the paper.

Yes, you can go for MA in sociology.

No percentage will be deducted. You can get admission in B.A. after commerce. You are eligible for the same. Good luck.

No, you cannot do two degree courses at the same time. You need to choose one. It's better if you excel in one subject and have a great future in that.