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 temperature also depends on the radius of the star, so one can't decide based on the information provided.
C) The star emitting visible light.
D) Both stars are the same temperature.

Question

Quizplus · Accepted Answer

The color of a star is related to its surface temperature. A star emitting primarily visible light would appear either white, blue, or red, depending on its temperature. Blue stars are the hottest, followed by white, and then red. Therefore, the star emitting visible light is likely to be hotter than the star emitting primarily infrared light.

One Star Is Emitting Primarily Visible Light and Another Star