Physics - EM Waves Question with Solution | TestHub

The electric field of an electromagnetic wave in free space is given by $\vec{E}=10\cos \left(10^{7}t+kx\right)\hat{j}V/m$, where $t$ and $x$ are in seconds and metres respectively. It can be inferred that (1) The wavelength $\lambda$ is $188.4\mathrm{m}$. (2) The wave number $k$ is $0.33\mathrm{rad}/\mathrm{m}$. (3) The wave amplitude is $10\mathrm{V}/\mathrm{m}$. (4) The wave is propagating along.t $x$ direction Which one of the following pairs of statements is correct?NEET 2010 (Mains)