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Interference of Sound Waves

Physics · Class 12

Interference of sound occurs when sound waves overlap and produce regions of increased or decreased sound intensity.

Δr=nλ
Δr=(n+½)λ
Constructive Sound Interference: Sound is a longitudinal mechanical wave. Two coherent sound waves can overlap. Compression meets c
Destructive Sound Interference: Compression tends to overlap rarefaction. Result: reduced pressure variation. For two coherent so
Sound intensity varies spatially because of interference.

Free-body idea — Interference of Sound Waves — original sketch for this lesson (not copied from a textbook).