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5)A loudspeaker has a circular opening with a radius of 0.0950m.The electrical power needed to operate the speaker is 25.0W.The average sound intensity at the opening is 17.5W/m.m.What percentage of the electrical power is converted by the speaker into sound power?

5)A loudspeaker has a circular opening with a radius of 0.0950m.The
electrical power needed to operate the speaker is 25.0W.The average
sound intensity at the opening is 17.5W/m.m.What percentage of the
electrical power is converted by the speaker into sound power?

Grade:12

1 Answers

Abhishek Kumar
askIITians Faculty 253 Points
6 years ago
Power = 25.
X/Surface area = 17.5 (Let X is converted to sound energy)
X/Surface area x Area of the circular opening = 17.5
Find X.

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