1.

A wave is represented by the equetion`y=7 sin(7pi t-0.04pix+(pi)/(3))` x is in metres and t is in seconds. The speed of the wave isA. 175 m/secB. 49 `pi` m/secC. 49/`pi` m/secD. 0.28 `pi` m/sec

Answer» Correct Answer - A
`v="Co-efficient of t"/"Co-efficient of x" = (7pi)/0.04`=175 m/s


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