Physics (AS & A Level) · May / June 2016 · Paper 11 · Question 27

Fringes of separation x are observed on a screen 1.00 m from a double slit that is illuminated by yellow light of wavelength 600 nm. At which distance from the slits would fringes of the same separation x be observed when using blue light of wavelength 400 nm?

1. A0.33 m
2. B0.67 m
3. C0.75 m
4. D1.50 m

As printed in the paper