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

Correct Answer is : The power flux through the z=0 plane.

The type of polarization of the wave.

The group velocity of the wave.

The phase velocity of the wave.

The power flux through the z = 0 plane.

GATE Electronics and Communications (EC) 2016 Shift 2 Solved Paper

Question : 34 of 65

Marks: +1, -0

Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as

E↖{→} = x↖{\^}E_{x}e^{−(ω t−β z)}

, where the propagation constant

β

is a function of the angular frequency

ω

. Assume that

β (ω )

and

E_{x}

are known and are real. From the information available, which one of the following CANNOT be determined?

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