Question: Sec. 1 4 - 4 : What critical test must a nonluminous compact object pass before it is determined to be a black hole? It
Sec. : What critical test must a nonluminous compact object pass before it is determined to be a black hole?
It must be an isolated object with no companion star.
It must have an accretion disc.
It must have a mass greater than solar masses.
It must emit X rays.
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