Compared to the event horizon,the photon sphere of a black hole is
A)nearer the singularity.
B)farther from the singularity.
C)at the same location.

Question

Quizplus · Accepted Answer

The photon sphere is farther away from the singularity than the event horizon. The event horizon marks the boundary beyond which nothing, not even light, can escape the gravitational pull of the black hole. The photon sphere is the region in which light can orbit the black hole in a circular path. Its radius is 1.5 times the Schwarzschild radius, whereas the event horizon has a radius equal to the Schwarzschild radius. Therefore, the photon sphere is farther from the singularity than the event horizon.

Compared to the Event Horizon,the Photon Sphere of a Black