Writing the 1st and 2nd Inter, can require a lot of time. But if you go for the NIOS examination board, then it would be a faster choice. As the NIOS score, is recognized by the Government of India, so you will be able to take admission under most of the state colleges as well as other colleges in India. So my recommendation for you will be to go for the NIOS and you will save some time and resources.

For more information regarding the NIOS consider the link below:

https://school.careers360.com/boards/nios

For more information regarding Bsc Physics as a career consider the link below:

https://www.careers360.com/courses/b-sc-in-physics

I hope this helps. Wish you a great day!