Hey!
There are some book lists available in the link https://school.careers360.com/articles/kvpy-books-know-best-books-for-preparation to prepare.
To get the pdf of NCERT Books - https://ncert.nic.in/textbook.php?jesc1=1-16
You can also download book pdf from https://www.pdfdrive.com/fundamentals-of-physics-textbook-d33735280.html
You can also check out https://school.careers360.com/articles/how-to-prepare-for-kvpy for more info.
Hope this helps.
Thank you.
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