Question

Is the the particles on two sides of the nide travels in opposite direction​

Answer 1

We know that a node is formed when there is a stationary wave. A node is a point on the wave where the amplitude is always zero, which means that a nodal point never vibrates.

When the two particles are in the two sides of a node their phase directions are completely opposite to each other. This means that the phase difference between them should be π or 180

Hence the correct answer is option (C).

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