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(D) The general equation for a wave is $E = E_0 \cos(\omega t - kx)$.Comparing this with the given equation $E_y = 2.5 \cos[(2\pi 	imes 10^6)t - (\pi

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Moving along $x$ direction with frequency $10^6 \, Hz$ and wavelength $200 \, m$.

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(D) The general equation for a wave is $E = E_0 \cos(\omega t - kx)$.Comparing this with the given equation $E_y = 2.5 \cos[(2\pi 	imes 10^6)t - (\pi 	imes 10^{-2})x]$,we identify the angular frequency $\omega = 2\pi 	imes 10^6 \, rad/s$ and the wave number $k = \pi 	imes 10^{-2} \, rad/m$.The wave propagates in the $+x$ direction because the term is $(\omega t - kx)$.The frequency $f$ is given by $f = \frac{\omega}{2\pi} = \frac{2\pi 	imes 10^6}{2\pi} = 10^6 \, Hz$.The wavelength $\lambda$ is given by $\lambda = \frac{2\pi}{k} = \frac{2\pi}{\pi 	imes 10^{-2}} = 200 \, m$.

The electric field part of an electromagnetic wave in a medium is represented by $E_x = 0$; $E_y = 2.5 \frac{N}{C} \cos \left[ (2\pi \times 10^6 \frac{rad}{s})t - (\pi \times 10^{-2} \frac{rad}{m})x \right]$; $E_z = 0$. The wave is:

Similar Questions

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