Question 8: What is the phase speed of the wave propagating in xy plane whose wave motion is described by the expression as «(х, у.) — и, sin| | 4x10* . -(x + y) – n10*1 +0.785? (Here u, is amplitude and e is the speed of light in free space)

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Question 8: What is the phase speed of the wave propagating in xy plane
whose wave motion is described by the expression as
4n105
-(x+ y)– n10"1+0. 785
u(x, y;t) = u, sin
(Here u, is amplitude and c is the speed of light in free space)
Transcribed Image Text:Question 8: What is the phase speed of the wave propagating in xy plane whose wave motion is described by the expression as 4n105 -(x+ y)– n10"1+0. 785 u(x, y;t) = u, sin (Here u, is amplitude and c is the speed of light in free space)
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