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Two Stars, P and Q, Can Be Seen in the Same

Question 175

Multiple Choice

Two stars, P and Q, can be seen in the same region of Earth's sky with the same apparent magnitude, but star Q is twice as far away as star P. What is the ratio of the luminosities of these stars (star P/star Q) ?


A) 4
B) 2
C) 1/4
D) 1/2

Correct Answer:

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