Hi Himanshi!
In the first year, BA LLB subjects include the Political System, Introductory Economics, Preliminary Psychology, Basic Sociology and some basic information about laws. The Syllabus gets in-depth about the topic mentioned above in the later semesters/years.

Also, the choice between psychology and economics is not given in most of the cases as they are considered as the mandatory subjects during the first two semesters but in the later years depending the colleges, you might get choice between the subjects (elective subjects).

You can check out the complete syllabus here:

https://www.careers360.com/courses/ba-llb-dual-degree

Thankyou!