Physics (AS & A Level) · May / June 2025 · Paper 13 · Question 31

Light of a single frequency from two coherent sources interferes to produce a pattern of bright and dark fringes on a screen. Which change results in a larger fringe separation?

1. Aincreasing the distance between the sources and the screen
2. Bincreasing the distance between the two sources
3. Cincreasing the frequency of the light
4. Dincreasing the intensity of the light

As printed in the paper