# Phase Difference ?

The figure shows two point sources of light, A and B. B emits light waves that are +p radians out of phase with the waves from A. A is 3λ from P. B is 5λ from P. (λ is the wavelength.) What is the phase difference between waves arriving at P from A and B?

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- Anonymous1 year agoFavorite Answer
If the phase difference was zero, these waves would be in phase. So the phase difference at P must be +p radians.

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