Given the progressive wave equation y = 5 sin (2000 \pit - 0.4x), calculate wave length
A
12.4 m
B
15.7 m
C
17.5 m
D
18.6 m
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Comparing y = 5sin (200 \pit - 0.4X) with the wave equation y = A sin (wt -KX) K = (2\pi)/\lambda = 0.4
∴ \lambda = (2\pi)/0.4 = 15.7M
Source: Myschool Past Questions Archive (Record #14045)