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← ScienceWhich risk increases when a transatlantic cable is physically stressed?
A)Increased signal propagation delay✓
B)Reduced data transmission bandwidth
C)Elevated amplifier thermal runaway
D)Enhanced saltwater galvanic corrosion
💡 Explanation
Increased stress can deform the fiber, altering the refractive index; this causes greater modal DISPERSION, which leads to substantial signal propagation delay because the light takes varied paths. Therefore propagation delay worsens, rather than corrosion or thermal runaway.
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