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← ScienceWhich mechanism causes signal attenuation during wave propagation?
A)Dielectric loss converts energy to heat✓
B)Increased impedance reduces power transmission
C)Refraction disperses the signal path
D)Diffraction creates destructive wave interference
💡 Explanation
Dielectric loss causes attenuation because the alternating electric field induces polarization, and frictional losses convert some of the wave's EM energy into heat; therefore, the signal is weakened, rather than being reflected or redirected.
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