A) \[a\,\sin \,\omega t\]
B) \[a\,\sin \,(\omega t)\,\cos \,kx\]
C) \[a\,\sin \,(\omega t-kx)\,\]
D) \[a\cos kx\]
Correct Answer: C
Solution :
General equation of wave motion should be represented by \[y=f(ax\pm bt)\]or\[f(at\pm bx)\] When \[y\] is a sine or cosine function such as \[y=a\,\,\sin \,\,(\omega t-kx)\] or \[y=a\,\,\cos \,\,(\omega t-kx)\] it is called simple harmonic progressive wave.
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