What is the Schwarzschild radius of a black hole?
A) The radius of the singularity
B) The distance from the singularity to the point from which the X-rays are emitted
C) The maximum distance from the singularity from which nothing can escape from the black hole
D) The distance from the singularity to the point where any object entering the black hole will gain energy before leaving again

Question

Quizplus · Accepted Answer

The Schwarzschild radius, named after the physicist Karl Schwarzschild, is defined as the radius at which the escape velocity from the gravitational attraction of a massive object equals the speed of light. For a black hole, this radius marks the so-called event horizon, which is the point of no return beyond which anything, including light, is trapped by the strong gravitational pull and cannot escape. Therefore, the Schwarzschild radius represents the maximum distance from the singularity that nothing can escape from the black hole.

What Is the Schwarzschild Radius of a Black Hole