waves

Question 1

The figure below shows a diagram of apparatus used to demonstrate the formation of interference fringes using a white light source in a darkened room. Light from the source passes through a single slit and then through two narrow slits S1 and S2.

(a) Describe the interference pattern that is seen on the white screen.

Answer 1

TWO FROM:
central white fringe ✔
(fringes either side) showing range of colours/spectrum ✔
with red furthest and blue/violet closest to centre ✔