Which of these properties can NEVER be known about a black hole?
A) type of material inside it
B) angular momentum (spin)
C) total amount of matter (the mass) inside it
D) net electric charge

Question

Quizplus · Accepted Answer

The type of material inside a black hole cannot be determined due to the no-hair theorem, which posits that a black hole is characterized only by its mass, electric charge, and angular momentum, not by the material it has absorbed.

Which of These Properties Can NEVER Be Known About a Black