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

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