The equation of a wave disturbance is given as : \( \mathrm{y}=0.02...

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The equation of a wave disturbance is given as : \( \mathrm{y}=0.02 \cos \left(\frac{\pi}{2}+50 \pi \mathrm{t}\right) \cos (10 \pi \mathrm{x}) \), where \( \mathrm{x} \) and \( \mathrm{y} \) are
P in meters and t in seconds. Choose the wrong statement:

W
(A) Antinode occurs at \( x=0.3 \mathrm{~m} \)
(B) The wavelength is \( 0.2 \mathrm{~m} \)
(C) The speed of the constituent waves is \( 4 \mathrm{~m} / \mathrm{s} \)
(D) Node occurs at \( x=0.15 \mathrm{~m} \)
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