Suppose the Distance Between an Observer and a Lightbulb Is

question 185

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.

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