One star is emitting primarily visible light and another star is emitting primarily infrared light. Which star is hotter?
A)the star emitting infrared light
B)the star emitting visible light
C)Both stars are the same temperature.
D)The temperature also depends on the radius of the star, so one can't decide based on the information provided.

Question

Quizplus · Accepted Answer

The color of a star is directly related to its temperature. Blue and white stars are hotter than red and yellow stars. Since the star emitting visible light is emitting primarily in the visible range (which includes blue and white wavelengths), it is likely hotter than the star emitting primarily infrared light.

One Star Is Emitting Primarily Visible Light and Another Star