Question: Two ropes are joined smoothly to form a single rope, which is attached to a wall. If the ends of the two ropes are moved

Two ropes are joined smoothly to form a single rope, which is attached to a wall. If the ends of the two ropes are moved up and down in phase, but one rope is half a wavelength longer than the other to the point where they join, will the interference of the two waves when they join be constructive or destructive? Explain.

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