Physics (AS & A Level) · May / June 2022 · Paper 11 · Question 29

Light of a single frequency passes through two narrow slits and produces an interference pattern on a screen some distance away. The interference fringes are very close together. Which change would increase the distance between the fringes?

1. AIncrease the brightness of the light source.
2. BIncrease the distance between the slits and the screen.
3. CIncrease the distance between the two slits.
4. DIncrease the frequency of the light used.

As printed in the paper