Answer;
The component waves have different frequencies.
Step-by-step explanation;
-When two periodic waves meet, their amplitudes add (by principle of superposition) and the resulting disturbance can be either reinforced (constructive interference) or eliminated (destructive interference) .
-The magnitudes of reinforcement usually really dependent on the number of frequencies and interference is usually caused due to the difference in frequencies. Therefore, we can conclude that if the frequencies are different and causing interference, the reinforcement will also different.