The equation of a progressive wave is given by y=asin(628t−31.4x)If the distances are expressed in cms and time in seconds, then the wave velocity will be
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a
314 cm/sec
b
628 cm/sec
c
20 cm/sec
d
400 cm/sec
answer is C.
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Detailed Solution
v=Co-efficient of tCo-efficient of x=62831.4=20 cm/sec