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← ScienceWhich timing error arises on GPS satellites because of relativistic effects?
A)Atomic clock signal blueshift
B)Doppler frequency shift amplification
C)Gravitational time dilation increase✓
D)Signal propagation speed slowdown
💡 Explanation
Gravitational fields curve spacetime, so stronger gravity near Earth causes gravitational time dilation. Clocks on satellites run faster because satellites experience weaker gravity; therefore, uncorrected data would accumulate errors, rather than result from altered signal speed.
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