Science

Job roles in government central or state government department:
Banks.
Armed Forces are General in nature or Technical requiring first degree level of knowledge.
Government teaching and Research Indian Statistical Service.In universities or colleges in the government, or private sector.Technical or administrative in nature.
Teaching at the undergraduate/postgraduate level.Teaching in management, actuarial programs in the private sector.

Delhi University has more than 70+ colleges which offer physics honors course for graduation aspirants. For more information please visit DU's website.

Both the colleges are good but ARSD has better faculty than DDUC. So I would suggest you to go with ARSD.

There are various courses. Firstly, you need to decide your specific field in which you are interested and check there details and contact with agencies, they will guide you regarding that and about your exam, and it also depends on your score.

Courses you may look for after 12th PCB-
MBBS
BAMS (Ayurvedic)
BHMS (Homoeopathy)
BUMS (Unani)
BDS
Bachelor of Veterinary Science & Animal Husbandry (B. VSc AH)
Bachelor of Naturopathy & Yogic Science (BNYS)
Bachelor of Physiotherapy
Integrated M.Sc
B.Sc. Nursing
B.Sc. Dairy Technology
B.Sc. Home Science
Bachelor of Pharmacy
Biotechnology
BOT (Occupational Therapy)
General Nursing
BMLT (Medical Lab Technology)
Paramedical Courses.

It totally depends upon your interest. If you are interested, you can go for it and choose subject according to your choice, and before taking any subject, see if you can go good in future or not.