Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as $\rm \vec E={\rm{\hat x}}E_xe^{−(\omega t-\beta z)}$ , where the propagation constant $\rm \beta$ is a function of the angular frequency $\rm \omega$. Assume that $\rm \beta(\omega)$ and $\rm E_x$ are known and are real. From the information available, which one of the following CANNOT be determined?

Question

Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as $\rm \vec E={\rm{\hat x}}E_xe^{−(\omega t-\beta z)}$ , where the propagation constant $\rm \beta$ is a function of the angular frequency $\rm \omega$. Assume that $\rm \beta(\omega)$ and $\rm E_x$ are known and are real. From the information available, which one of the following CANNOT be determined?

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NA

TuteeHUB · Answer

The type of polarization of the wave.

TuteeHUB · Answer

The group velocity of the wave.

TuteeHUB · Answer

The phase velocity of the wave.

TuteeHUB · Answer

The power flux through the $\rm z = 0$ plane.

1.	Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as \(\rm \vec E={\rm{\hat x}}E_xe^{−(\omega t-\beta z)}\) , where the propagation constant \(\rm \beta\) is a function of the angular frequency \(\rm \omega\). Assume that \(\rm \beta(\omega)\) and \(\rm E_x\) are known and are real. From the information available, which one of the following CANNOT be determined?
A.	The type of polarization of the wave.
B.	The group velocity of the wave.
C.	The phase velocity of the wave.
D.	The power flux through the \(\rm z = 0\) plane.
Answer» E.

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