Multiple Choice
Suppose the distance between an observer and a lightbulb is doubled. How does its final brightness compare with its initial brightness?
A) The lightbulb appears 1/16 as bright.
B) The lightbulb appears 4 times brighter.
C) The lightbulb appears 1/2 as bright.
D) The lightbulb appears 1/4 as bright.
Correct Answer:
Verified
Correct Answer:
Verified
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