Fully constructive interference between two sinusoidal waves of the same frequency occurs only if they:
A)travel in the same direction and are 270°out of phase
B)travel in the same direction and are 45° out of phase
C)travel in the same direction and are in phase
D)travel in the same direction and are 180° out of phase
E)travel in the same direction and are 90° out of phase

Question

Quizplus · Accepted Answer

Fully constructive interference occurs when two waves of the same frequency, amplitude, and wavelength are in phase and traveling in the same direction. This means that the crest of one wave aligns with the crest of the other wave, resulting in an amplitude that is the sum of the individual amplitudes. Therefore, option C is the correct answer as it states that the waves are in phase and traveling in the same direction.

Fully Constructive Interference Between Two Sinusoidal Waves of the Same