Diploma

M.Sc. in Astrophysics will be better option to pursue. As you have already done Physics, so you will be eligible for it. Diploma will not be much helpful. Regular B.Sc. will have more benefits.

Hi Tania,
It is a correspondence course. You just need to apply to the college directly, with the necessary details.

Hi Shyamal,
Your question is bit tricky to understand. I will try to solve at my level. If you are saying that is it possible to get admission in CS after completing diploma, the answer is yes, you will get admission in direct second year of engineering in CS branch. Also if you wish to change your branch in engineering then you can change it.
Hope this helps you.
Best of luck.

The admissions are still open. Contact the department directly or the Principal Mr. Manish Sharma; he will guide you. The email ID is:
principal.cihm@gmail.com
Thanks

Yes, you are eligible. To take admission in M.Com or PG Diploma, you must be graduate from any recognised university. You are an existing student of IGNOU so you need to use your PRN number and apply on the IGNOU website.

For lateral entry, you have to ask college authorities for there vacant seats in second year. If any seats are available, then definitely you'll get admission.

No, Diploma in chemical engineering is not available there. Look for it somewhere else.

The fee is probably around INR 50 thousand to INR 60 thousand.
Check the link for more info
https://www.shiksha.com/college/international-institute-of-photography-kolkata-iipk-salt-lake-city-47824.

Yes, you can take admission for Diploma after class 10th. Check the link to know about fee and courses offered.
https://www.shiksha.com/college/vlcc-institute-delhi-lajpat-nagar-27722