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The Brainliest Answer!
2016-02-22T18:25:51+05:30
Distance between a compression and a rarefaction=50 cm = 0.5m
therefore,wavelength=0.5*20=10 m..............(1)
frequency=1/T = 1/0.2 = 10/2 = 5 Hz.............(2)
now,
velocity = frequency*wavelength
velocity =5*10
therefore, velocity = 50 m/s
2 5 2