Question

During propagation of longitudinal plane wave in a medium, two particles separated by a distance equivalent to one wavelength at an instant will be/have

• A. In phase, same displacement
• B. In phase, different displacement
• C. Different phase, same displacement
• D. Different phase, different displacement

Answer 1

The correct option is A In phase, same displacement

The wave pattern replicates after every wavelength seperation so the particle seperated by the distances of a wavelength has same displacement and are in same phase.