How does a black hole form from a massive star?
A)During a supernova,if a star is massive enough for its gravity to overcome neutron degeneracy of the core,the core will be compressed until it becomes a black hole.
B)Any star that is more massive than 8 solar masses will undergo a supernova explosion and leave behind a black-hole remnant.
C)If enough mass is accreted by a white-dwarf star so that it exceeds the 1.4-solar-mass limit,it will undergo a supernova explosion and leave behind a black-hole remnant.
D)If enough mass is accreted by a neutron star,it will undergo a supernova explosion and leave behind a black-hole remnant.
E)A black hole forms when two massive main-sequence stars collide.

Question

Quizplus · Accepted Answer

A black hole forms from a massive star through a process known as gravitational collapse. During a supernova explosion, if a star is massive enough for its gravity to overcome neutron degeneracy of the core, the core will be compressed until it becomes a black hole. This occurs when the core of the star is unable to support itself against gravity, causing it to collapse inward rapidly, causing a supernova explosion. The remaining core, which is extremely dense, may continue to collapse until it becomes a black hole.

How Does a Black Hole Form from a Massive Star