The diagram below represents shallow water waves of wavelength λ passing through two small openings, A and B, in a barrier. How much longer is the length of path AP than the length of path BP?

Engineering

Physics

Interference of Sound Wave

Question

The diagram below represents shallow water waves of wavelength λ passing through two small openings, A and B, in a barrier.

How much longer is the length of path AP than the length of path BP?

3 λ

1 λ

4 λ

2 λ

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AP = 4λ

BP = 2λ Δx = 2λ

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