space medium true/false

The photon sphere is a region around a black hole where gravity bends light into circular orbits.

  1. True
  2. False

Answer: True

At 1.5 Schwarzschild radii, photons can theoretically orbit a non-rotating black hole, forming the boundary visible in EHT images as the bright ring.

Topic Astronomy - Black Holes
Exam Relevance SSC CGL, UPSC Prelims

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