Question

Wave C has an amplitude of 1 and wave D has an amplitude of 3 as shown below. What will happen when the trough of wave C meets the crest of wave D?

Answer 1

They will interfere to create a crest with an amplitude of 2.

Step-by-step explanation:

If the crest of one wave meets the trough of another wave, destructive interference occurs and the combined amplitude will be less than that of either wave alone. If the amplitudes of the two waves are equal, when the crest and trough superimpose, the combined amplitude will be zero.