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What Total Power Is Radiated by a Light Bulb That

Question 4

Multiple Choice

What total power is radiated by a light bulb that provides 12 mW on a 15 cm × 25 cm sheet of paper, which is 1.7 m from the bulb? Assume that the paper is oriented with its surface perpendicular to the light rays.


A) 2.9 W
B) 12 W
C) 1.7 W
D) 6.6 W

Correct Answer:

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