A certain star has a (B-V) color index of 0.61 and a B magnitude of 6.87. How many times brighter is this star when measured using a V filter than when using a B filter?
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A certain star has a (B-V) color index of 0.61 and a B magnitude of 6.87. How many times brighter is this star when measured using a V filter than when using a B filter?
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