Two Waves with the Same Frequency and Wavelength but with Different

question 71

Multiple Choice

Two waves with the same frequency and wavelength but with different amplitudes are added.If A₁ = 2A₂ and the waves are 180º out of phase,then the amplitude of the resultant wave is

• A)zero.
• B)the same as A₁.
• C)the same as A₂.
• D)equal to A₁ + A₂.
• E)coherent.