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← ScienceWhich risk increases when radio waves propagate through ionospheric plasma?
A)Signal refractive index decreases rapidly
B)Spatial dispersion induces pulse broadening✓
C)Wave polarization maintains initial alignment
D)Skin effects diminish signal strength
💡 Explanation
Increased spatial dispersion leads to pulse broadening because different frequencies travel at slightly different speeds. Therefore the pulse widens as it propagates, rather than maintaining a single sharp waveform; rather than wave coherence maintaining.
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