In a stationary wave, all the particles [OJEE 2011]
In a stationary wave, all the particles [OJEE 2011]
on either side of a node vibrate in same phase
in the region between two nodes vibrate in same phase
in the region between two antinodes vibrate in same phase
of the medium vibrate in same phase
Solution
Phase is expressed as relative displacement between two corresponding peaks of a waveform. In stationary wave, at any instant the phase of all particles between two successive nodes is the same, but phase of particles on one side of node is opposite to the phase of particles on the other side of node, i.e. phase difference between any two particles can be either 0 or $\pi$.