The luminosity of a star is

Question

Quizplus · Accepted Answer

The luminosity of a star is determined by its apparent brightness and distance. Apparent brightness gives us a measure of how bright the star appears to us from Earth, while distance tells us how much of that brightness is actually reaching us. The combination of these two factors gives us the true luminosity of the star. Surface temperature plays a role in determining a star's color and spectral type, but not its luminosity. Therefore, options A and C can be eliminated. Option B is incorrect because distance alone does not determine a star's luminosity.

The Luminosity of a Star Is