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Which risk increases when radio waves encounter atmospheric ducting condition?

A)Increased interference at distant receivers
B)Signal attenuation due to oxygen absorption
C)Wavelength compression from Doppler effect
D)Phase shift from ionospheric reflection

💡 Explanation

When radio waves encounter atmospheric ducting, total internal reflection traps the signal, propagating it far beyond the horizon because changes in refractive index with height guide the waves, leading to increased overlapping signals. Therefore interference risk results, rather than attenuation, compression, or phase shift which depend on molecule states, relative motion, or charged plasma reflection.

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