Question

the diagram shows monochromatic light passing through two openings.
what do the areas labeled x, y, and z represent?
○ constructive interference in which waves cancel each other out
○ constructive interference in which waves strengthen each other
○ destructive interference in which waves cancel each other out
○ destructive interference in which waves strengthen each other

Explanation:

Monochromatic light passing through two openings creates an interference pattern. Areas X, Y, Z are bright regions where light waves from the two openings arrive in phase (path difference is integer multiple of wavelength), leading to constructive interference—waves add up and strengthen each other. Destructive interference involves cancellation, which does not match bright regions.

Answer:

constructive interference in which waves strengthen each other