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Which effect on signal timing is experienced in GPS satellites when gravitational potential decreases?

A)Time dilation, clocks appear slower
B)Length contraction affects wavelengths
C)Increased Doppler induced frequency
D)Decreased signal modulation complexity

💡 Explanation

Gravitational time dilation increases because the satellite experiences less gravitational potential; per Einstein's equivalence principle, the onboard clocks appear to tick slower relative to Earth-based observers, therefore, GPS corrections are necessary rather than clocks appearing faster or signals changing form.

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