1 .	A typical black hole is always specified by
[ A ]    a (curvature) singularity [ B ]    a horizon [ C ]    either a (curvature) singularity or a horizen [ D ]    a charge
Answer : Option C Explanation : 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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