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A Microphone of Surface Area 2

Question 22

Multiple Choice

A microphone of surface area 2.0 cm² absorbs 1.1 mW of sound.What is the intensity of sound hitting the microphone?

A) 2.2 x 10^-5 W/m²
B) 0.55 W/m²
C) 2.2 W/m²
D) 2.8 W/m²
E) 5.5 W/m²

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