Multiple Choice
If an object doubles its luminosity in 10 hours,how large can the emitting source of light be?
A) about 10 light-years across
B) about 10 parsecs across
C) about 10 light-hours across
D) varies depending on how luminous the object is
E) varies depending on how far away the object is
Correct Answer:

Verified
Correct Answer:
Verified
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