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

Question

Quizplus · Accepted Answer

The Schwarzschild radius is the distance from the center of a black hole (the singularity) to the event horizon, the boundary beyond which nothing, not even light, can escape its gravitational pull.

What Is the Schwarzschild Radius of a Black Hole