The wave function (in S.I unit) for an electromagnetic wave is given as \( \psi(x, t)=10^{3} \si...
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0The wave function (in S.I unit) for an electromagnetic wave is given as \( \psi(x, t)=10^{3} \sin \pi\left(3 \times 10^{6} x-9 \times 10^{14} t\right) \).
The speed of the wave is
(a) \( 9 \times 10^{14} \mathrm{~m} / \mathrm{s} \)
(b) \( 3 \times 10^{8} \mathrm{~Hz} \)
(c) \( 3 \times 10^{6} \mathrm{~m} / \mathrm{s} \)
(d) \( 3 \times 10^{7} \mathrm{~Hz} \)
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