Hello,

For joining as ISRO Scientist -SC (entry level). basic education qualification is Msc or Btech. Msc can be in Physics, chemistry or mathematics. After Bsc physics you can join as Technical Assistant, ISRO allow you option of part-time/correspondence study, after completing Msc you can get promoted to Scientist-SC.

For more information about ISRO please refer to this link-

https://engineering.careers360.com/articles/isro-drdo-barc-dae-how-work-here

I hope this will help you.

All the best!!