Hello swaraj,
if you want to make a career in defence then that is very good thought. you can do it after your intermediate. there are openings after 10th for defence but better to do it after intermediate. there are so many openings and exams conducted.
IIT is an top government engineering institute where students study different engineering streams like computer science, electrical,electronics, aerospace, biomedical and many more.
to get an admission IIT, you have to study very hard and understand all the basics concept of your 2 years of intermediate. you have to solve numericals in limited time. for that you need practice.
you have to know what you want to do after your intermediate. decide, make plan and work on it.
Thanks
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