204.The equation of a plane progressive wave y=0.9 sin4pie(t-x/2) when it is reflected at a rigid support, its amplitude becomes 2/3 of its previous value.The equation of the reflected wave is
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equation of the plane progressive wave in +ve x direction=
y = 0.9 Sin (4π t - 2π x) units
On reflection from a rigid support, the phase changes by π rad. The direction changes to -x.
y = 2/3* 0.9 Sin (4π t + 2π x - π) units
y = - 0.6 Sin (4π t + 2π x)
y = 0.9 Sin (4π t - 2π x) units
On reflection from a rigid support, the phase changes by π rad. The direction changes to -x.
y = 2/3* 0.9 Sin (4π t + 2π x - π) units
y = - 0.6 Sin (4π t + 2π x)
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