Two coherent microwave transmitters operate in phase at a wavelength of
PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
Two coherent microwave transmitters operate in phase at a wavelength of 0.10m. At a point in space the path difference between the two waves is measured to be 0.30m. Which of the following best describes the interference detected at that point?
(a) Destructive interference, because the waves arrive 180∘ out of phase.
(b) Constructive interference, because the waves arrive in phase.
(c) Destructive interference, because the path difference is not an integer multiple of λ.
(d) No interference pattern is observed because the path difference exceeds one wavelength.