The diagram below shows the propagation of a | vedclass

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(D) Two points are in the same phase if they have the same displacement from the equilibrium position and are moving in the same direction. This occur

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$B$ and $F$

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(D) Two points are in the same phase if they have the same displacement from the equilibrium position and are moving in the same direction. This occurs when the distance between the two points is an integer multiple of the wavelength,$\lambda$. In the given wave diagram,points $B$ and $F$ are at the same vertical displacement from the equilibrium line and are both moving in the same direction (downwards). The horizontal distance between $B$ and $F$ is exactly one wavelength,$\lambda$. Therefore,points $B$ and $F$ are in the same phase.

The diagram below shows the propagation of a wave. Which points are in the same phase?

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