Physics A-Level
Black hole
What Black hole means in Physics A-Level, as defined for AQA, OCR.
Definitions of Black hole
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Reference: OCR
A region where gravity is so strong that the escape velocity exceeds the speed of light, so nothing, not even light, can escape from inside the event horizon.
A collapsed core from which the escape velocity exceeds the speed of light c, so even light cannot escape.
The remnant that forms if the mass of the collapsed core is greater than roughly three solar masses.
Topics that use Black hole
- Supernovae, neutron stars and black holes (A-level only) (AQA A-Level)
- Stars (OCR A-Level)
Related terms
- Chandrasekhar limit
- Neutron star
- Supernova
- Accretion
- Active galactic nuclei
- dark energy
- Electron degeneracy pressure
- Gravitational collapse
Using Black hole in the exam
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