It will be open book (you can use any books / notes / reference material) and virtually infinite time. Of course within reasonable bounds.
The suggested topics for the presentations are given below. You may even choose any topic outside these with the consent of the instructors. The presentations are expected to have a lot of emphasis on the experimental techniques, and the student should be familiar with the relevant theoretical matter. You may consult with the instructors about the details.
Please send your first three choices to amol@tifr.res.in, and you'll be assigned one of those (as long as all your choices have not been taken up already). The assignment of topics will be on the first come first served basis.