MCA

Kindly check out the below link for information related to your query. https://www.shiksha.com/it-software/colleges/mca-colleges-Tamil-Nadu
Different colleges and universities have different eligibility criteria for admission to MCA course. Nevertheless, the eligibility criteria on the basis of which admission is done in most places of India are as follows :
To get admission in MCA course, the student must be a graduate with 50% marks. There is a relaxation of 5% marks for reserved castes. It is mandatory for the student to have Mathematics as a subject in 12th or graduation. BCA / B.Sc. / B.A. / B.Com or any other stream like these will work in graduation but BCA graduate may be given more importance at the time of admission in some colleges. Hope it helps. If you found it useful then upvote or thumbs up my answer. Good luck.

Master in Computer Applications MCA is a professional postgraduate degree programme offering huge
benefits to the graduates. This course was designed to meet the growing demand for qualified
professionals in this field as the demand for computers is increasing in each industry. This programme
prepares students to take up challenging roles related to information technology. An MCA degree will
help you advance your career and allows you to work in multiple sectors and gain valuable experience. The MCA programme offers huge benefits and career opportunities to successful candidates. Some of the
benefits of this programme are:Provide in-depth knowledge of the technical aspects of computerOffer lucrative job opportunitiesHigher paying packages
For more - https://www.shiksha.com/university/swarrnim-startup-and-innovation-university-ahmedabad-53998/courses?uaf[]=base_course&rf=filters&bc[]=103.

Hi.
fees is Rs 75,000 per year.
ELIGIBILITY
Passed B.C.A/B.Sc. in Computer Science/B.Sc. in Information Technology/B.Sc in Computer Technology/Bachelor's Degree in Computer Science Engineering or equivalent or a degree from a University recognized or certified by UGC/SRMIST/AIU
OR
Passed B.Sc./B.Com./B.A. from a University recognized/certified by UGC/SRMIST/AIU with Mathematics at the 10+2 level or the graduation level.
A minimum percentage of marks/CGPA as prescribed by the SRMIST.
Notwithstanding the above, actual admissions will be based on the rules and regulations of the UGC/AICTE/any other competent authorities.
ADMISSION CRITERIA
Fulfilling the eligibility criteria and Subject to the availability of seats at that point of time, Candidates will be called for counseling.
Upon selection of programme, tuition fees and other applicable fees have to be paid at the time of counselling
Provisional Allotment Letter (PAL) will be issued to confirm the candidate's admission.

You can do MCA after B.Sc computer science. MCA is a 3 year postgraduate degree and it will provide you exposure to many subjects of computer. It is good to do MCA after bsc because only the bsc degree will not give you a better job. There is always an ample opportunity for master students rather than graduate student.
I would suggest you to choose a university that caters your all round development and provides complete placement and internship assistance.
Geeta University is a well-known Haryana based university that offers courses in management, commerce, engineering, arts, humanities, social sciences, law, performing arts, and Indic studies. It offers an program that is focused on imparting advanced knowledge on the subject. The college aims to provide world-class and holistic education to students.

If you will get a good MCA college after B.Sc. Then your chances of placement will be higher and focus on getting into a reputed college. After MCA if you want to go for teaching job then again your post graduation can help and soon you can go for Ph.D. also. IT market has good paying jobs so you. MCA is a post graduation course in Computer Application. The course has got wide acceptance because of extensive knowledge in the soft- ware. There exists close resemblance between Mathematics and MCA curriculum to a greater extent. Higher Mathematics deals with Future - forecast, Demand - analysis and Future consumption -analysis. MCA deals with many numerous application of Mathematics and conversant of Mathematics helps to understand the different tools used in the Soft ware. There are several advantages to getting an MCA after graduation. Aside from a higher salary, MCA graduates are more likely to get a good job with a good company. They can even advance into management positions, which will lead to higher salaries. Moreover, they have greater job security than their MBA counterparts. If you're looking to advance your career, an MCA after graduation is the best option. Best Universities in India
SRM University Chennai - SRM Institute of Science and Technology. IISc Bangalore - Indian Institute of Science. Sathyabama University - Sathyabama Institute of Science and Technology. Geeta University, Panipat
Gandhigram Rural Institute, Dindigul. Shiv Nadar University, Greater Noida.