Star A and star B have the same temperature, but different luminosities. What can you inferabout these two stars?
A)Star A must be bigger.
B)Star B must be bigger.
C)Star A must be redder.
D)Star B must be redder.
E)Nothing can be inferred from the information given.

Question

Quizplus · Accepted Answer

The luminosity of a star is determined by its size, temperature, and distance from Earth. Since the temperature of the two stars is the same, the difference in luminosity must be due to a difference in size or distance. Without more information, we cannot determine which star is bigger or closer to Earth.

Star a and Star B Have the Same Temperature, but Different