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← ScienceWhich risk increases when using gravitational time dilation for satellite navigation?
A)Beacon failure due strong gravity
B)Clock drift due relativistic effects✓
C)Orbital decay due signal lag
D)Doppler shift overwhelms GPS signals
💡 Explanation
Increased clock drift arises because the clock's time must be calibrated relative to Earth's gravity based on the principle of equivalence; therefore, relativistic effects distort time measurements, rather than beacon failure directly from gravity affecting the clocks physically.
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