Imagine we have an adjustable slit that we can make wider or narrower. If we shine light of a fixed intensity on the slit, and then crank the slit so its width decreases (while keeping other things the same), will the light at the center of the central peak on the display screen?
A) Remain the same
B) Get brighter
C) Get dimmer

Question

Quizplus · Accepted Answer

As the slit width decreases, diffraction increases, causing the light to spread out more, which results in a dimmer central peak on the display screen.

Imagine We Have an Adjustable Slit That We Can Make