1.

The displacement \[y\] of a wave travelling in the x-direction is given by \[y={{10}^{-4}}\sin \,\,\left( 600t-2x+\frac{\pi }{3} \right)\] metres, where \[x\] is expressed in metres and \[t\] in seconds. The speed of the wave-motion, in ms?1, is                                                       [AIEEE 2003]

A.            200
B.            300
C.            600
D.            1200
Answer» C.            600


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