Two stars--A, with a luminosity 0.5 times that of the Sun, and B, with a luminosity 4.5 times that of the Sun--are observed to have the same apparent brightness, Which one is more distant?

Two stars--A, with a luminosity 0.5 times that of the Sun, and B, with a luminosity 4.5 times that of the Sun--are observed to have the same apparent brightness, Which one is more distant?




A) Star A
B) Star B
C) Cannot determine without more data


Answer: B


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