Electromagnetic Field Theory
The statement which is not correct from the following:

 Gauss’s static that divergence of D = ρu.
 For a uniform long charged line with l1 c/m the electric field intensity E is given as E = ρL/(π ε0.r).
 Gauss’s law states that total electric flux through any surface is equal to the total charge enclosed by surface.
 An electric flux line is an imaginary path or a line drawn in such a way, that its direction at any point is the direction of electric field at that point.

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Electromagnetic Field Theory
In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include

Amplitude timing and phase correction
Polarization shifting and code diversity
Antenna replacement and feed correction
Path diversity and frequency diversity

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