PMelol22 said:
The diameter of a black hole is directly proportional to its mass. As the mass of a black hole increases, its diameter also increases.
The diameter of a black hole is typically measured in terms of its Schwarzschild radius, which is the distance from the center of the black hole to the event horizon. This distance is then converted into AU for easier comparison with other astronomical objects.
No, the diameter of a black hole remains constant once it has formed. However, the event horizon may expand or contract depending on the amount of matter falling into the black hole.
Black holes are incredibly dense and compact, so their diameters are relatively small compared to other astronomical objects with similar masses. For example, a black hole with the mass of the sun would have a diameter of only about 6 kilometers.
There is no known limit to the mass of a black hole. However, the largest known black holes are supermassive black holes found at the center of galaxies, with masses ranging from millions to billions of times the mass of the sun.