Physics (AS & A Level) · Oct / Nov 2016 · Paper 11 · Question 27

Diagrams X and Y show the passage of water waves around an obstacle and through a gap. The thick lines are barriers to the waves and each thin line represents a wavefront. [diagrams X and Y] Which statement is correct?

1. ADiagrams X and Y both illustrate diffraction.
2. BDiagrams X and Y both illustrate interference.
3. COnly diagram X illustrates interference.
4. DOnly diagram Y illustrates diffraction.

As printed in the paper