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Black Holes and Gravitational Waves

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Multiple Choice

What is a black hole?

  1. A region of spacetime where gravity is so strong that nothing, not even light, can escape.
  2. A dense object with a gravitational pull so strong that it can bend light.
  3. A collapsed star that has exhausted its nuclear fuel.
  4. A point in spacetime where the laws of physics break down.
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