Hello

Doing bsc after 12th boards is good decision but it has to be bold enough as you must have a keen  interest in the core subjects like physics , chemistry, etc . It must also be clear that scope and opportunities in this field are also wide spread . At last  I will tell you that  you can surely opt for this field .

Hey there

There is no bsc in jnu for science. You need to go for MSC in jnu after your bsc from any other institute. In jnu there is a BA program only for that you need to have atleast 45% in your 12th. Last date to apply is extended to 15th of may.

Check the link for complete details

https://www.google.com/url?sa=t&source=web&rct=j&url=https://university.careers360.com/articles/jnu-admission/amp&ved=2ahUKEwjd75K8o7HpAhXuxTgGHdnoB2QQFjAAegQIARAB&usg=AOvVaw00MCSlbrc_irxkHDVWug_j&ampcf=1

Good luck