Hello,

In order to join ISRO in the future, BSc. Physics will be considered helpful. The basic educational qualification required is Msc or Btech. Msc can be in Physics, Chemistry, or Mathematics, but of you join BSc Physics, then I suggest you to go for MSc Physics next. However, you will need to appear a national-level written examination in offline mode and a personal interview. If you get selected, you can join ISRO.

Hope this helps!