Question

PLz give a well-cut definition of pitch and amplitude. Also name the SI unit of amplitude.

Answer 1

amplitude - the maximum displacement of particles of the medium from its mean position in which wave passes .
     S.I. unit of amplitude -  meter  ( m ) 

pitch -  two or more sounds having same loudness or amplitude can be characterized as the pitch .
                pitch of the sound depends on frequency . higher the frequency higher be the pitch . two or more sounds having same loudness or amplitude .

Answer 2

1.amplitude-the maximum displacement of the particles of the medium from their original mean position on passing a wave through the medium is called amplitude.
                                            or
amplitude means the height of the crest or trough.it is denoted by letter A.
si unit=m (metre)

2.pitch- pitch is the characteristic of the wave which is related to the frequency.