Two Waves with the Same Frequency and Wavelength but with Different

question 116

Multiple Choice

Two waves with the same frequency and wavelength but with different amplitudes are added. If A₁ = 2A₂ and the waves are 180^o 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.