Harmonic Progression

Given a, b, c (taken in the order) are in arithmatic progression b, c, d (taken in this order) are in geometric progression and c, d, k (taken in this order) are in Harmonic progression. If a= 2 and k = 18 then possible values of 'c' can be

What is Simple Harmonic Progressive Wave ?

Which of the following expressions is that of a simple harmonic progressive wave ?

Which of the following expressions represents a simple harmonic progressive wave

State any four characteristics of simple harmonic progressive wave ?

In the equation of a simple harmonic progressive wave of wavelength 'lamda' , the propagation constant is given by

The equation of a simple harmonic progressive wave along the negative direction of X-axis is