Black Holes and the Development of Indian Space Instrumentation

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Multiple Choice

What is the event horizon of a black hole?

  1. The point of no return beyond which nothing, not even light, can escape.
  2. The center of a black hole where all matter is concentrated.
  3. The outer boundary of a black hole beyond which its gravitational pull is negligible.
  4. The region inside a black hole where time and space are distorted.
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