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What happens when window panel sections of the wooden portions are thrown into vibrations to produce new sounds?

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What happens when window panel sections of the wooden portions are thrown into vibrations to produce new sounds?

(a) Vibrations are produced

(b) Resonance occurs

(c) Echoes are produced

(d) Absorption occurs

This question was addressed to me in unit test.

This question is from Reverberation in portion Waves of Engineering Physics I

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Correct choice is (b) Resonance occurs

Explanation: Resonance occurs when a new sound not of frequency matches with standard audio frequency. When window panel sections, of the wooden portions are thrown into vibrations to produce new sounds it results in interference between original sound and created sound. This will create a disturbance to the audience.

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