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Which of the following is not true for this progressive wave \( y=4 \sin 2 \pi\left(\frac{t}{0.02}-\frac{x}{100}\right) \) where \( y \) and \( x \) are in \( \mathrm{cm} \) and
\( \mathrm{P} \)
\( t \) in sec
[CPMT 2003]
W
(a) Its amplitude is \( 4 \mathrm{~cm} \)
(b) Its wavelength is \( 100 \mathrm{~cm} \)
(c) Its frequency is \( 50 \mathrm{cycles} / \mathrm{sec} \)
(d) Its propagation velocity is \( 5 \times 10^{3} \mathrm{~cm} / \mathrm{sec} \)
(e) None of the above
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