Star a and Star B Both Have an Apparent Magnitude

question 83

Multiple Choice

Star A and star B both have an apparent magnitude of 7.0, but star A is at a distance of 15 pc and star B is at a distance of 30 pc. Which statement below is correct?

• A) Star A appears brighter than star B, but star B and star A have the same intrinsic brightness.
• B) Star B appears brighter than star A, but star B and star A have the same intrinsic brightness.
• C) Star A and star B appear to have the same brightness, but star B is intrinsically brighter than star A.
• D) Star A and star B appear to have the same brightness, but star A is intrinsically brighter than star B.
• E) It is impossible to determine how bright these stars are or appear to be relative to one another, given the information above.

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