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← ScienceWhich mechanism causes Shapiro delay as light passes Jupiter?
A)Spacetime curvature affects light's path✓
B)Refraction increases path length directly
C)Doppler shift changes perceived speed
D)Gravitational lensing diverts light rays
💡 Explanation
Spacetime curvature warps space around massive objects; the Shapiro delay occurs because these regions increase the photon's travel time rather than refracting along a different path; therefore spacetime curvature modifies observed light trajectories, not frequency.
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