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2 April, 01:42

Cancellation (destructive interference) occurs at superposition of a crest and a (n):

crest

trough

node

barrier

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Answers (1)
  1. 2 April, 04:56
    0
    A noise-cancellation speaker emits a sound wave with the same amplitude but with inverted phase (also known as antiphase) to the original sound. The waves combine to form a new wave, in a process called interference, and effectively cancel each other out - an effect which is called destructive interference.

    trough
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