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Geography, 11.10.2019 01:00 cameronbeaugh

When compare a star of magnitude -1 to a star of magnitude +1, which of the following is true：

a. -1 is 2.5 times brighter than +1

b.-1 is 2.5 times dimmer than +1

c.-1 is 6.25 times brighter than +1

d.-1 is 6.25 times dimmer than +1

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