If all black holes are made up of an infinitely small point with infinite density, why are there “big” black holes and “small” black holes?

Question

If all black holes are made up of an infinitely small point with infinite density, why are there “big” black holes and “small” black holes?

In: 2

Answer 1

the “hole” of a black hole is merely the region in space in which the gravitational field of the collapsed star is sufficient to trap photons. The more mass the infinitesimally small core absorbs into itself the further the gravitational field stretches.