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← ScienceWhich outcome results when stellar core hydrogen depletes, impacting sustained Bethe cycle fusion?
A)Increased helium fusion rate
B)Core gravitational collapse begins✓
C)Neutron flux production drops
D)Radiative pressure dramatically increases
💡 Explanation
Core collapse occurs as hydrogen depletion reduces energy production, thus weakening outward thermal pressure. Lower pressure due gravitational force causes increased core density and temperature accelerating further fusion processes rather than a reduction in neutron production capabilities.
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