On a certain date,Mars has an apparent magnitude of +1 and Venus has an apparent magnitude of +2.Which is brighter and by how much?
A) Venus is twice as bright as Mars
B) Venus is 2.5 times as bright as Mars
C) Mars is twice as bright as Venus
D) Mars is 2.5 times as bright as Venus
E) Mars is 100 times as bright as Venus
Correct Answer:
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