Physics (AS & A Level) · May / June 2018 · Paper 11 · Question 26

The diagram shows two sources of waves S1 and S2. The sources oscillate with a phase difference of 180°. The sources each generate a wave of wavelength 2.0 cm. Each source produces a wave that has amplitude x0 when it reaches point P. What is the amplitude of the oscillation at P?

1. A0
2. B\frac{x_0}{2}
3. Cx_0
4. D2x_0

As printed in the paper