An EM wave propagating in $x$-direction has a wavelength of $8mm$. The electric field vibrating $y$-direction has maximum magnitude of $60{Vm}^{-1}$. Choose the correct equations for electric and magnetic fields if the EM wave is propagating in vacuum :

Answer: (B) ${E}_{y}=60\sin \left[\dfrac{\pi }{4}\times {10}^{3}\left(x-3\times {10}^{8}t\right)\right]\hat{j}V{m}^{-1}$
${B}_{z}=2\times {10}^{-7}\sin \left[\dfrac{\pi }{4}\times {10}^{3}\left(x-3\times {10}^{8}t\right)\right]\hat{k}T$