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

Question

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The Answer of 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

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