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
B. \(\frac{A}{2}\) C. \(\frac{A}{4}\) D. \(2A\)
Correct Answer: 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
