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← ScienceWhich effect on GPS accuracy happens near massive objects?
A)Gravitational time dilation error✓
B)Increased atmospheric refraction index
C)Signal multipath interference increases
D)Atomic clock synchronization variance
💡 Explanation
Near massive objects, gravity curves spacetime, causing gravitational time dilation of satellite clocks because atomic clocks tick slower, and GPS relies on precise timing; therefore, timing errors increase rather than relying on atmosphere effects or signal interference.
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