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The diagram above illustrates two waves of equal amplitudes A and frequencies ...



The diagram above illustrates two waves of equal amplitudes A and frequencies approaching each other. When the two waves meet at a point I midway between them, the vertical displacement of the resulting wave will be
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  • B \(\frac{A}{2}\)
  • C \(\frac{A}{4}\)
  • D \(2A\)
Correct Answer: Option D
Explanation:
This is a type of constructive interference. When two waves of equal amplitude are interfering constructively, the resulting amplitude is twice as large as the amplitude of an individual wave.
= A + A = 2A

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