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← ScienceWhich outcome occurs when the distance grows in terrestrial radio propagation?
A)Signal strength decreases significantly faster✓
B)Multipath interference effects become negligible
C)Fresnel zone obstruction becomes insignificant
D)Transmitter power requirement decreases linearly
💡 Explanation
Signal strength decreases sharply as distance extends because power spreads geometrically via inverse-square law, termed free-space path loss. Therefore, radio signals weaken faster, rather than multipath fading reduce or transmitter power decreases because geometric spreading dominates.
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