Which outcome results from increased spacetime curvature around a Schwarzschild black hole's event horizon influencing photon trajectories?

💡 Explanation

Increased curvature of spacetime causes gravitational lensing because photons follow geodesics strongly affected by the gravity; therefore background light bends around the black hole, rather than alternative negligible framedragging or reduced redshift effects which would occur in weaker fields.

• Which consequence results when imperfect path length matching degrades fringes during fiber optic interferometry?
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