Question

What do we mean by the singularity of a black hole?

A) It is the edge of the black hole, where one could leave the observable universe.

B) It is the ʺpoint of no returnʺ of the black hole; anything closer than this point will not be able to escape
the gravitational force of the black hole.

C) The term is intended to emphasize the fact that an object can become a black hole only once, and a black
hole cannot evolve into anything else.

D) It is the center of the black hole, a place of infinite density where the known laws of physics cannot
describe the conditions.

Answer 1

The singularity of a black hole is a point of zero volume and infinite density at the center of the black hole where spacetime ceases to exist and the laws of physics break down. It is surrounded by an event horizon, which is the boundary of the black hole where escape is impossible. While the singularity cannot be fully described, it is a fundamental concept in the study of black holes.

Step-by-step explanation:

The singularity of a black hole refers to a point of zero volume and infinite density at the center of the black hole. It is a result of the collapsing star-core that made the black hole. At the singularity, spacetime ceases to exist and the known laws of physics break down.

From the outside, a black hole can be described as a singularity surrounded by an event horizon, which is the boundary of the black hole where the escape velocity equals the speed of light. Anything closer than the event horizon cannot escape the gravitational force of the black hole.

Although we do not have a complete understanding of the singularity itself, its existence is predicted by the theory of general relativity and is an essential concept in the study of black holes.