1. If light from one star is 40 times more intense than light from another star, what is their…

1. If light from one star is 40 times more intense than light from another star, what is their difference in magnitudes? 2. If two stars differ by 8.6 magnitudes, what is their intensity ratio? 3. Star A has a magnitude of 2.5; Star B, 5.5; and Star C, 9.5. Which is brightest? Which are visible to the unaided eye? Which pair of stars has an intensity ratio of 16?  

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