When a train of plane wave traverses a medium, individual particle execute periodic motion given by the equation
Where the lengths are expressed in cm and time in second. Calculate the phase difference (in degree) for two positions of the same particle which are occupied at time intervals 0.4 second apart.
Text Solution
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The equation of a wave motion is given by
…… .(i)
Here 
This equation can be written as
…… .(ii)
Comparing equation-(ii) with equation-(i), we get amplitude 
; wavelength 
; wave velocity 
.
Here frequency is given as
Phase of a particle at instant 
is given by
The phase at instant 
is given by
The phase difference is given as
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