The star named Capella has an apparent magnitude of 0 while the star named Polaris has an apparent magnitude of 2,which means that Capella is __________ than Polaris.
A) 6 times fainter
B) 2 times fainter
C) 6 times brighter
D) 2 times brighter

Question

Quizplus · Accepted Answer

Apparent magnitude is a logarithmic scale where a difference of 5 magnitudes corresponds to a brightness factor of 100. A difference of 2 magnitudes means Capella is about 6.31 times brighter than Polaris.

The Star Named Capella Has an Apparent Magnitude of 0