Wave motionHard
Question
For the wave shown in the fig, the equation for the wave, travelling along +x axis with velocity 350 ms-1. When its position at t = 0 is as shown-
Options
A.0.05 sin(78.5 x - 27500t)
B.0.05 sin(75.8 x - 27000t)
C.1 sin(78.5 x - 27500t)
D.0.05 sin(57.8 x - 27500t)
Solution
Given 
= 20 ∴ λ = 8 cm
K =
× 100 = 78.5 rad/m
ω = vK = 350 × 78.5 ≃ 27500 rad/s
= 20 ∴ λ = 8 cmK =
× 100 = 78.5 rad/mω = vK = 350 × 78.5 ≃ 27500 rad/s
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