If Nothing Can Ever Leave a Black Hole, Can the Mass

question 62

Multiple Choice

If nothing can ever leave a black hole, can the mass of a black hole ever decrease?

• A) No.
• B) Yes, if antiparticles enter a black hole and annihilate with matter already inside the black hole.
• C) Yes, if the matter inside the black hole is radioactive (e.g., uranium), allowing their decay products-alpha particles, electrons, and gamma rays-to constantly leave the black hole.
• D) Yes, if particle-antiparticle pairs are created outside the event horizon out of gravitational energy from the black hole and one particle enters the event horizon while the other escapes.

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Definitions:

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Fat-soluble vitamin produced from precursor molecules in skin exposed to ultraviolet light; increases calcium and phosphate uptake from the intestines.

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A medical condition where the blood pressure in the arteries is persistently elevated.