Question

During propagation of a plane progressive mechanical wave,
A. all the particle are vibrating in the same phase
B. amplitude of all the particles is equal
C. particles of the medium excutes SHM
D. wave velocity depnds upon the nature of the medium

Answer 1

Correct Answer - B::C::D

During propagation of a plane progressive mechanical wave, like shown in the diagram, amplitude of all the particels is equal.
(i) Clearly, the paticles O,A and B are having different phase.
(ii) Particels of the wave shown in the figure are having up and down SHM.
(iii) For a progressive wave propagating in a fluid .
Speed `=v=sqrt((B)/(rho))`
Hence ` vpropsqrt((1)/(rho))" "` [ `:.` B is constant ]
As `rho` depends upon nature of the medim , hecne v also depnds upo the nature of the medium.