For a Diffraction Horn Loudspeaker,the Sound Emerges Through a Rectangular

question 19

Multiple Choice

For a diffraction horn loudspeaker,the sound emerges through a rectangular opening.The width of a diffraction horn is 0.14 m.If the speed of sound in air is 343 m/s,at what frequency is the diffraction angle equal to 35°?

• A)3300 Hz
• B)4300 Hz
• C)6300 Hz
• D)7700 Hz
• E)9200 Hz

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