Hello Prabha,

Hope you're doing well.

For your query, it highly depends upon many factors such as the number of students appearing for the exam (BHU PET) , the level of the exam and the cut offs released by the concerned authorities.

I'll give you a glimpse of cut off for last year for your discipline :-

1. General category  - 188 marks

2. OBC category - 171 marks

3. SC category- 100 marks

ST category- 40 marks

https://www.google.com/amp/s/university.careers360.com/articles/bhu-pet-cut-off/amp

You may follow this link for further assistance. And also, do keep a track of official website of bhu.

All the best :)