Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 27

Two signals approach each other, as shown. [diagram: two pulse signals with arrows approaching each other] At one instant, the signals completely overlap. According to the principle of superposition, what is the shape of the resulting signal at this instant?

1. A[diagram A]
2. B[diagram B]
3. C[diagram C]
4. D[diagram D]

As printed in the paper