With the help of NCERT books you can qualify the exam but to score good marks you need to refer other important books.
If we talk about physics then it's require deep understanding of the concepts. It's totally depends on topic to topic. For some topic NCERT is enough but for some topics you need to refer other books.
NCERT are very important books for your preparation you should complete it first then you can go for other books. You can get direct questions from NCERT books. Questions given on NCERT after completion of topics are very important.
If you want to score good marks make sure you solve previous year papers as well.
Good luck!!