Engineering
Physics
Reflection Refraction and Superposition of Wave
Wavefront
Intereference New
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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Solution
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AP = 4λ

BP = 2λ     Δx = 2λ