Question 1481Navigation General
70% to passThe magnitude of three stars is indicated. Which star is the brightest?
A
Cannot be determined; magnitude indicates size not brightness
B
Canopus - 0.9
C
Vega + 0.1
D
Antares + 1.2
AI Explanation
The correct answer is B) Canopus - 0.9. The magnitude scale is an inverse logarithmic scale, where lower numbers indicate brighter stars. Therefore, Canopus with a magnitude of -0.9 is the brightest of the three stars listed. The other options are incorrect because: A) Magnitude does indicate the brightness of a star, not its size. C) Vega with a magnitude of +0.1 is dimmer than Canopus. D) Antares with a magnitude of +1.2 is the dimmest of the three stars.
Related Questions
Q@q.QuestionNumber:The pressure-sensitive element of an aneroid barometer is called a _____________...
Q@q.QuestionNumber:What is the compass course of a vessel heading WSW?
Q@q.QuestionNumber:Your vessel is participating in the Voluntary Observing Ship Program, you are pr...
Q@q.QuestionNumber:When making landfall at night, you can determine if a light is a major light or ...
Q@q.QuestionNumber:One point of a compass is equal to how many degrees?
Ready to test your knowledge?
Take a Navigation General Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App