Multiple Choice
The Schwarzschild radius is
A) half the diameter of the singularity in a black hole.
B) the distance to which gas is ejected in a planetary nebula.
C) half the diameter of a neutron star.
D) the distance from the center of a black hole to the point at which the escape velocity becomes equal to the speed of light.
Correct Answer:

Verified
Correct Answer:
Verified
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