Two light beams that are initially parallel to each other will eventually converge in what kind of universe?
A) flat only
B) hyperbolic only
C) either flat or hyperbolic
D) closed

Question

Quizplus · Accepted Answer

In a closed universe, which is characterized by positive curvature (similar to the surface of a sphere), parallel light beams will eventually converge due to the curvature of space.

Two Light Beams That Are Initially Parallel to Each Other