A single narrow slit is illuminated with monochromatic light, producing a diffraction pattern on a screen.
The width of the slit is decreased.
What happens to the width and the brightness of the central maximum of the diffraction pattern?
Width of central maximum: increases; Brightness of central maximum: increases
Width of central maximum: increases; Brightness of central maximum: decreases
Width of central maximum: decreases; Brightness of central maximum: increases
Width of central maximum: decreases; Brightness of central maximum: decreases
37 exam-style questions on AQA A Level Physics Refraction, diffraction and interference, covering Interference, Diffraction, and Refraction at a plane surface. Each one has a worked solution and a mark scheme showing where the marks go.