Exam-style question
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What is the event horizon of a black hole?.
- A.The point of no return for matter and radiation
- B.The center of the black hole
- C.The surface of the black hole
- D.The outer boundary of the black hole's gravitational influence
Model answer
What a good answer should say
- The point of no return for matter and radiation
Explanation
Why this works
The event horizon is the boundary around a black hole beyond which no information or matter can escape, marking the point of no return.
Common mistake
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