Hey Buddy,
Since BSC is not enough to became a ISRO scientist I guess.Isro is taking bachelor graduates very rarely.So after completing MSC/PhD in physics you have high probability after MSC/PhD you can apply for Research scientist position and other fellow positions in ISRO.All you have to do is complete your bachelor and masters with high level of patience and dedication.Since ISRO is expecting a enthusiastic youth like you
All the very best...
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