Two Separated Sources Emit Sinusoidal Traveling Waves That Have the Same

question 77

Multiple Choice

Two separated sources emit sinusoidal traveling waves that have the same wavelength $\lambda$ and are in phase at their respective sources.One travels a distance $\lambda$ ₁ to get to the observation point while the other travels a distance $\lambda$ ₂ The amplitude is a maximum at the observation point if $\lambda$ ₁ $\lambda$ ₂ is:

• A)an odd multiple of \(\lambda\) /2
• B)an odd multiple of \(\lambda\) /4
• C)a multiple of \(\lambda\)
• D)an odd multiple of \(\pi\) /2
• E)a multiple of \(\pi\)