\\\\(\\overrightarrow { E } \ imes \\overrightarrow { B } \\\\) represent the direction of propogation of wave.Refer image,Graph showing \\\\(B\\\\) along \\\\(\\widehat { k } \\\\) and \\\\(E\\\\) along \\\\(\\widehat {j } \\\\) \\\\((b)\\\\) Speed of electromagnetic wave is \\\\(V=\\dfrac{E_{0}}{B_{0}}\\\\)Where \\\\(E_{0}=\\\\)Magnititude of electric field\\\\(B_{0}=\\\\)Magnititude of magnetic field