Question

which of the following statements about black holes is false. a. Astronomers have never seen a black hole. b. A black hole sucks in matter like a vacuum cleaner. c. No light can escape from a black hole. d. All of the mass in a black hole is concentrated in a single point.

Answer 1

a. Astronomers have never seen a black hole.

Step-by-step explanation:

A black hole is 1-Dimensional point in space-time having density is extremely large such that space-time curvature bends enough for even light cannot escape. All the mass is concentrated at this point. A black hole is formed when a very high mass star dies. It goes supernova and collapses to form a black hole. It sucks in matter like a vacuum cleaner.

Astronomers have seen a black hole by actually viewing the event horizon which is a bright disk surrounding a black hole. Recently an image of a black hole was also released.

Answer 2

I love this question, because it gets at one of the greatest misconceptions about black holes.

Choice-B is false. A black hole does not suck matter in like a vacuum cleaner.