Career

Physical cosmology is a branch of physics and astrophysics that deals with the study of the physical origins and evolution of the universe. It also includes the study of the nature of the universe on a large scale.
I think the most important thing one needs in a profession like astronomy and cosmology is curiosity. The conventional way is to go for Bachelors in physics, followed by a Masters and a PhD in physics. But some people are doing PhD after a Bachelors in engineering. One needs very good understanding of physics and maths as a prerequisite. Meanwhile, many leading research institutes like IUCAA, Pune organise short term Schools in astrophysics for school students, which should be used to get a deeper glimpse.

Hi Yogesh,
A career in photography offers the following options:
- Photojournalism
It's a part of journalism in which images are used to tell news stories. It requires promptness and instinct to generate ideas to make a news story from pictures. You can create a news story from pictures taken during a war or riots in the city/country. Photojournalists should be prepared to take risks like going to war zones, disaster zones etc.
This also covers feature photography like capturing pictures for an entire theme or subject and telling a news story. You can work independently or work for a news agency.
- Fashion and advertising photography
If glamour attracts you, then this is for you. It involves working with models and is quite a lucrative and creative field. The work could be used for advertising agencies, fashion houses and fashion magazines.
- Nature and wildlife photography
If you're a nature freak and also have a passion to capture it, then go for it. You can work for travel and geographic magazines, calendars as you travel around capturing waterfalls, landscapes, wildlife and other interesting shades of nature.
- Event photography
Event photographers work for weddings and other events like sports meets, family functions etc. This still has strong demand for film photography, since most clients would like a copy of the negatives.
- Still photography
This involves the capturing of inanimate natural or man-made objects. Portrait photography is one example of this, where you can capture pictures of children, pets etc. You can run your own studio or work for someone. Capturing pictures for cookbooks is another good opportunity.
- Travel photography
If you love adventure and travelling then travel photography could be good option for you. Travel photographers can work for the hospitality industry, travel magazines and websites. It requires being able to capture the right shot at the right moment.
For more information, please visit:
https://www.shiksha.com/arts-fine-visual-performing/photography/articles/top-10-colleges-for-photography-courses-in-india-blogId-11445

It will be difficult to get a good job just doing BA.Arts. There are many specialised courses available after graduation as Diplomas or Master's degree.
As I am not aware of your interest areas, but still trying to give some options as:
Masters of Business Administration (MBA): The most potential career option after graduation in Arts is a degree in Management or Masters of Business Administration. The 2-year management course from a reputed institute paves the path for a career in the field of business management. Some of the reputed entrance tests conducted by the best institutes are CAT/MAT/ XAT/ FMS/IIFT/SNAP.
Masters of Arts (MA): Going for a MA degree from a reputed institute can open the doors for M-Phil and a PhD program, which further enhances the job opportunities, especially in academics and research.
Popular Professional Courses
Hotel Management: Demand for trained professionals in the hotel industry has been constantly growing.
Travel and Tourism: Tourism industry is another sector which has bright job prospects.
Fashion and Textile Designing.
Journalism and Mass communication.
B.Ed
and many many more.