Multiple Choice
Star C and star D have the same luminosity. Star C is twice as far away from Earth as star D. How do the brightnesses of stars C and D compare?
A) Star C appears four times as bright as star D.
B) Star C appears twice as bright as star D.
C) Star D appears twice as bright as star C.
D) Star D appears four times as bright as star C.
E) Stars C and D appear equally bright.
Correct Answer:
Verified
Correct Answer:
Verified
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