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Question
A typical black hole is always specified by
Options:
A .  either a (curvature) singularity or a horizon
B .  a charge
C .  a horizon
D .  a (curvature) singularity
Answer: Option A
Answer: (a)Black holes are regions of spacetime from which nothing, not even light, can escape.A typical black hole is the result of the gravitational force becoming so strong that one would have to travel faster than light to escape its pull.Such black holes contain a spacetime singularity at their centre.

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