Here are the essential concepts you must grasp in order to answer the question correctly.
Event Horizon
The event horizon is the boundary surrounding a black hole beyond which no information or matter can escape. It represents the point at which the escape velocity equals the speed of light, making it impossible for anything, including light, to break free from the gravitational pull of the black hole.
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Schwarzschild Radius
The Schwarzschild radius is the radius of the event horizon for a non-rotating black hole. It is directly proportional to the mass of the black hole and can be calculated using the formula r_s = 2GM/c², where G is the gravitational constant, M is the mass of the black hole, and c is the speed of light.
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Escape Velocity
Escape velocity is the minimum speed needed for an object to break free from the gravitational attraction of a celestial body without any additional propulsion. For a black hole, this speed reaches the speed of light at the event horizon, illustrating the extreme gravitational forces at play.
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