Mondal, SouravDe, NilanjanPal, Anita2021-11-092021-11-092019-08-01https://doi.org/10.31801/cfsuasmas.587655http://hdl.handle.net/20.500.12575/75948Three composite graphs Ladder graph (L_{n}), Tadpole graph (T_{n,k}) and Wheel graph (W_{n}) are graceful graphs, which have different applications in electrical, electronics, wireless communication etc. In this report, we first determine M-polynomial of the Line graph of those three graphs using subdivision idea and then compute some degree based indices of the same.enM-polynomialDegree based topological indexLine graphArticle682210421162618-6470