Diploma

Top 10 Colleges for Photography Courses in India are mentioned at the link provided below. Earlier, one had to learn the nuances of photography on job or maybe by working as a helper with bigger photographers. However, now one can easily secure the necessary skills at good colleges. Some of the best colleges offering photography courses are mentioned at the link below:
https://www.shiksha.com/arts-fine-visual-performing/photography/articles/top-10-colleges-for-photography-courses-in-india-blogId-11445
CAREER PROSPECTS AND JOB OPPORTUNITIES /SCOPE:
A professional photographer may work independently or under supervision of others. Based on specialization, a photographer could don any of the many roles, like-
Fashion Photographer
Product & Commercial Photographer
Business & Industrial Photographer
Wildlife Photographer
Sports Photographer
Event Photographer (Wedding, Party, Concerts etc)
Fine Art Photographer
Automobile Photographer
Photojournalist
Forensic Photographer
One may also work as a freelancer. Opening your own Photo Studio is another excellent job opportunity available in front of photographers. They may also indulge in repair and marketing work (related to equipment and cameras). News papers, magazines and websites are known to hire photographers. One may join them as a staff photographer or freelance photographer. Regards.

Job prospects for structural engineers:
Out of the various branches of civil engineering, structural engineering is the most common and applied one in day to day life. As most of the construction works require the service of structural engineers, demand and scope for these engineers are much more than any other engineering field except maybe for software engineers.
Structural engineers often specialize in particular areas, such as engineering of bridges, buildings, pipelines, industrial structures or special mechanical structures such as vehicles, ships or aircraft. Structural engineers perform one of the most important roles in the construction industry. Without their skills and technical knowledge the structure we built will not be able to withstand weight, pressure and seismic activity. Structural Engineers also play a role in designing machinery where structural integration of the item is a matter of safety e.g. aircraft, spacecraft.
Structural engineers can find employment in a wide variety of venues, particularly firms specializing in architectural, engineering, construction and related services, as well as state and local governments. Many structural engineers hold supervisory or administrative positions. Another option is to work as a self-employed contract engineer or as consultants. Yet others who don't like site work can opt for research or teaching positions in universities. Regards.

No, you cannot get admission in Aeronautical Engineering course after completion of your Diploma course in Computer science, simple reason being that computer science has nothing to do with Aeronautical Engineering. Only candidates who have completed three years Diploma course in Aeronautical Engineering are eligible or qualified to get admission in Aeronautical Engineering course. To get admission in B.E/B.Tech course, you need to appear in Lateral entry examinations like LEET, ECET, JELET, etc., that is conducted by your respective state entrance examinations board. You have to clear the exam, and then based upon your examination rank, you will be allotted a seat in a particular college, where you get admission in second year of B.E/B.Tech course. It's not late, pursue the courses required and follow the eligibility rules, and you will surely achieve your dreams.
Secondly, this is the exact thing that will help you achieve your dreams, with Job outlook and salary scope:
Degree Level Bachelor's degree
Degree Field(s) Aeronautical or aerospace engineering or related major from a ABET accredited program
Engineering license may be required
Experience: None
Key Skills: Math and science aptitude; attention to detail and problem solving skills
Job Outlook (2014-2024) 2% decline
Median Annual Salary (2015) $107,830 (for aerospace engineer. Wish you luck for your future endeavors.