Star A and star B both have an absolute magnitude of 2.0, but star A has an apparentmagnitude of 5.0 and star B has an apparent magnitude of 7.0. Which statement below is correct?
A)Star A appears brighter than star B, but actually star B and star A are the same brightness.
B)Star B appears brighter than star A, but actually star B and star A are the same brightness.
C)Star A and star B appear to have the same brightness, but actually star B is brighter than starA.
D)Star A and star B appear to have the same brightness, but actually star A is brighter than starB.
E)It is impossible to determine how bright these stars are or appear to be relative to one another,given the information above.

Question

Quizplus · Accepted Answer

Star A appears brighter than star B because it has a lower apparent magnitude (5.0 vs. 7.0), indicating it looks brighter from Earth. However, since both stars have the same absolute magnitude (2.0), they are actually the same brightness intrinsically.

Star a and Star B Both Have an Absolute Magnitude