Luminosity is the amount of energy emitted by a star each second. stars radiate light over a broad range of frequencies in the electromagnetic spectrum, from the low energy radio waves to high energy gamma rays. the luminosity of a star depends on two factors: responses a distance from earth and temperature.distance from earth and temperature. b surface area and temperature.surface area and temperature. c gravity and distance from earth.gravity and distance from earth. d age and surface area.



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