Fully Constructive Interference Between Two Sinusoidal Waves of the Same

Multiple Choice

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