Suppose a star collapses and produces a black hole.The size of the event horizon of the black hole is determined entirely by the star's

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The size of the event horizon of a black hole is solely determined by the mass of the star that collapsed to create it. This is because the gravitational pull of the black hole increases with its mass, and the event horizon is defined as the point at which the gravitational pull becomes so strong that nothing, not even light, can escape. Therefore, only the mass of the star is relevant in determining the size of the event horizon, and not its chemical composition, age, or luminosity.

Suppose a Star Collapses and Produces a Black Hole