Diploma

The first thing you must note that if you are wishing to go for Diploma in Agriculture, you must have 50% aggregate in your class 10th with a pass in Maths, Science and English. If you are eligible then you can search for the interested college near by you or at particular places for which you are interested in and then apply for it by visiting them or you may also apply online.
And you can also visit the college or institute site for more information for your interested one so that it may clear out all your queries.
Beside this, there is the entrance exam for a particular college to be get selected so give the exam if they have and apply for it.

Hi Ravi,
You can surely pursue PG Diploma course in photography if you wish to carry a part-time career option along with practising as a doctor. But choosing photography as a full-time career is definitely not a good idea.
You can select the type of photography you wish to do and learn the same instead of getting a normal diploma. The types of photography are mentioned below to give you an inside of the same:
1) Landscape
2) Fashion
3) Fine Art
4) Portraiture
5) Wildlife
6) Wedding
7) Macro
8) Photojournalism
9) Architectural
10) Black & White
You may select any of the above types and go for the course. Further, you can work as a freelancer.
All the best.