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← ScienceWhich aspect degrades antenna signal when rain accumulates?
A)Attenuation via increased water absorption✓
B)Refraction increasing directional side-lobes
C)Capacitance altering impedance matching network
D)Amplification elevating thermal background noise
💡 Explanation
Absorption from water results in signal attenuation because electromagnetic energy is converted to thermal energy via increased molecular dipole interaction, causing energy loss during wave propagation; therefore attenuation increases; rather than refraction shifts or impedance mismatch with the transmission line.
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