Two particles A and B have a phase diference of `pi` when a sine wave passes through the regin

What is the minimum distance any two particles of a medium which always have the same speed if a sine wave travels through the medium ?

What type of motion particles of a medium execute when a wave passes through the medium?

Two sound waves having phase difference of 60^@ have path difference of

The particles of a medium vibrate about their mean positions whenever a wave travels through that medium. The phase difference between the vibrations of two such particles

The particles of medium vibrate about their-mean positions whenever a wave travels through that medium. The phase difference between the vibrations of two such particles

Two point A and B are situated at the same distance from the phase difference between the light waves passing throught A and B will be

Two point A and B are situated at the same distance from the phase difference between the light waves passing throught A and B will be

Two sound waves having a phase difference of 60^(@) have path difference of