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    Astronomy Preliminary
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    Exam 11: Measuring the Stars: the Main Sequence and Its Meaning
  5. Question
    Star a Is Twice as Luminous as Star B but Has
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Star a Is Twice as Luminous as Star B but Has

Question 40

Question 40

Multiple Choice

Star A is twice as luminous as star B but has half the temperature of star B.How large is the radius of star A compared to star B?


A) 23/2 as large
B) 22 as large
C) 25/2 as large
D) 23 as large

Correct Answer:

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