Physics (AS & A Level) · Feb / March 2022 · Paper 12 · Question 28

Light of a single wavelength is incident normally on a diffraction grating. The resulting diffraction pattern is displayed on a screen. Which change makes the first orders of intensity maxima further apart from each other on the screen?

1. Aplacing the screen closer to the diffraction grating
2. Busing a diffraction grating with less separation between adjacent slits
3. Cusing a diffraction grating with more slits but keeping the same separation between adjacent slits
4. Dusing light with a shorter wavelength

As printed in the paper