JEE

No actually you are not eligible for admission in any government college, NIT, IIT or any other reputed private college like VIT, SRM, BITS PILLANI etc. This is because the eligibility for these are minimum 75% in class 12th. But definitely you can apply for any other private college those who don't consider this eligibility criteria. ALL THE BEST.

JEE scores are applicable in following Engineering colleges as under.
1. IIT Madras
2. IIITDM Kancheepuram
3. Amrita vishwa Vidyapeetham
4. B. S. Abdur Rahman Crescent Institute Of Science And Technology
While the TNEA is counselling process for admission into B.Tech courses for state engineering colleges located in Tamil Nadu. So TNEA will be applicable for this year also.

Yes students of NIOS board students are also eligible to apply for JEE Main. The eligibility criteria of JEE Main is given below. Eligibility criteria : Candidate should have passed class 12 or qualifying the exam in 2018 or 2019. Candidate appearing in class 12 or equivalent qualifying exam in 2020 can also apply for JEE Main. National Institute of Open Schooling conducted Senior Secondary School Examination with a minimum of five subjects.

RPET and JEE Main entrance exams for admission in B.E/B.Tech courses not for Fashion Photography courses. Hence these entrance exams are not applicable for Certificate in Fashion Photography of Delhi School of Photography. You may directly contact to Delhi School of Photography for admission in desired courses.