Wave motionHardBloom L3
Question
Which of the following is the equation of a spherical wave
Options
A.S = S0 sin (Kx - ωt)
B.S = S0 cos (Kx - ωt)
C.S = (S0/x) sin (ωt – Kx)
D.S = (S0/x2) sin (ωt – Kx)
Solution
Sol. For spherical wave
Intensity (I) ∝ $\frac{1}{x^{2}}$
⇒ Amplitude (A) ∝ $\frac{1}{x}$
Hence (C) S = $\left( \frac{S_{0}}{x} \right)$sin(ωt – Kx)
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