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Which mechanism causes radio signal deflection when passing close to a black hole?

A)Geodesic deviation along curved spacetime
B)Doppler shift from event horizon velocity
C)Refraction within a plasma accretion disk
D)Quantum entanglement altering signal polarity

💡 Explanation

Signal deflection is caused by geodesic deviation affecting their path. Spacetime curvature near massive objects dictates the trajectory of photons because gravity alters space itself; therefore, signals bend towards the black hole rather than traveling in a straight line.

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