Question

two disturbances near each other and their waves overlap creates ____.
□ a diffraction pattern.
□ a refraction pattern.
□ an interference pattern.

Explanation:

• Diffraction is the bending of waves around obstacles or through openings, not related to overlapping of two disturbances.
• Refraction is the change in direction of a wave when it passes from one medium to another, not about wave overlap.
• Interference occurs when two or more waves overlap, resulting in a new wave pattern. So two disturbances with overlapping waves create an interference pattern.

Answer:

an interference pattern. (The option corresponding to "an interference pattern.")