Which of the following is true for a universe in which space is flat?
A)It has an infinite volume and a well-defined center
B)It has an infinite volume and no center
C)It has a finite volume and a well-defined center
D)It has a finite volume and no center

Question

Quizplus · Accepted Answer

A flat universe has an infinite extent in all directions and no curvature, which means it would not have a center. If it had a center, it would show some curvature, so option A and C can be ruled out. Hence, option B is the correct answer. Option D is also incorrect since it implies that the universe has boundaries, which is not supported by observations.

Which of the Following Is True for a Universe in Which