Two stars whose apparent magnitudes differ from each other by 5 magnitudes have a ratio of brightnesses of
A) 25.
B) 10.
C) 100.
D) 2.5.

Name: Two stars whose apparent magnitudes differ from each other by 5 magnitudes have a ratio of brightnesses of A) 25. B) 10. C) 100. D) 2.5.
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Question

Quizplus · Accepted Answer

The difference of 5 magnitudes corresponds to a brightness ratio of 100, as each magnitude difference of 1 corresponds to a brightness ratio of about 2.512.

Two Stars Whose Apparent Magnitudes Differ from Each Other by 5