y=0.05sin2π(0.1x+2t) represents a wave equation in which the distances are measured in metre and time in seconds. then wave velocity is
10m/s
20m/s
30m/s
40m/s
A
10m/s
B
20m/s
C
30m/s
D
40m/s
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Solution
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v=ωk=20.1=20ms
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