How can i improve my physics . I am in Xth.?

That depends on who's physics you are determined to learn. Would you like to learn clical, general, stringbased Mtheory, photon/quanta based? Or if you would like a true answer to how the fields work in unison, a theory which was copyrighted but never published answers t.o.e. using projective geometry. If you had the time you could easily derive your own mathematical translation of this and have the first math based t.o.e. I don't have the i.s.b.n. handy but I wrote the book. Some of my work was taken by some students in 97 and I strongly beleive was used by Micio Kaku to form M-theory.