Question on: JAMB Physics - 2008
Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length
A
12.4 m
B
15.7 m
C
17.5 m
D
18.6 m
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Correct Option: B
Comparing y = 5sin (200 πt - 0.4X) with the wave equation y = A sin (wt -KX) K = (2π)/λ = 0.4
∴ λ = (2π)/0.4 = 15.7M
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